the brilliance of jay's progression in countdown is that it gives you a promise of positive character development, and then it breaks it. and it does so intentionally, in the most diverting way, to emphasize jason's inability to escape the cycle.

or, another post breaking down the series, where i repeat myself a lot but also make a clearer argument.

there are three notable events that happen at the beginning: the subtle showcase of jay's internal conflict considering his approach toward killing (the very first encounter with duela and the monitor), jay reaching out to donna in crisis ("i guess I just wanted to be around someone else who might know how it feels…"), and finally – his helmet shattering. these scenes tell you: jason's direction as a character is changing, and it seems, for the better. he's about to abandon his trauma-based (no matter how ironic, it does remain tied to his trauma) identity, he is connecting with people, and he seems to be on a brink of understanding that his moral standing does not provide easy answers or solutions either.

and for the most part of the series, we see that narrative unfolding (even if a bit non-linear, still innocently convincing way). it is, in many ways, supported by bringing up features of his characterisation from the 80s. jason remains, of course, still unpleasant in ways typical for this era of writing, and is conflicted and disagreeable, which makes sense for his utrh/post-utrh personality. however, there are also details that bring us back to his original robin run and his cameos on ntt – we see him being responsible (e.g. #43 – suggesting to bring in other superheroes in crisis, even though he clearly is not keen on the idea of working with them), determined (#16: “isn’t that your super-power, stupid boy? too stupid to ever give up?” “maybe it is”), sensitive (half of the whole storyline, really), caring for gotham (gotham by gaslight) and people-oriented (as early as #51).

the issue that particularly signals that jason is an inherently good person and externalizes his internal conflicts regarding classic heroic vigilantism vs his cynical approach is #30, where we meet batman of earth-15 –  alt jason, whom our jason attempts to punch in the face.

and on topic of batman – jason is always gravitating towards batman. in gotham by gaslight jay looks delighted to see (the foreign) bruce and suggests checking with the local bat. then, earth-51 arc arrives.

earth-51 arc (#16 - #13) is a culmination of a promise of catharsis for jason. we have already seen him as batman, as a confirmation that a different life for him is possible. and here he has a chance to come to terms with his past and overcome it. he meets a version of bruce who has done exactly what he wanted him to do in utrh: killed the joker and the rest of the rogue gallery. what is most important – he is disappointed with this version of his father. we realise that jason, deep down, has an intimate and intuitive understanding of what batman stands for; and that he shares most of his values. this is a truth that you can't ignore especially since jay is the one to inspire this hollow, cynical version of batman to go out and fight in a seemingly lost battle.

and then batman dies. right in front of him.

this is a central moment of the narrative, for many reasons, most strikingly:

the symmetry:, a premise known from the lost days, becomes literal. this "the father had lost a son, and now the son had lost the father" is a cruel parallel to a death in the family and bruce's grief. jason's death created a gap between them that jay has been desperately trying to close, with no avail – because in bruce's mind, jason remains dead. now that jason is grieving bruce, the connection closes on both sides, and there's no way for either of them to reconcile the mourning with the reality of the other being truly alive. in this sense, the arc solidifies that jason can never come home.

no good deed goes unpunished. as i have mentioned before, so far jason is established as someone good at heart, but confused; and the reader intuitively assumes that his better, honest side will win. yet, the moment jason gives in to hope, it victimises and retraumatizes him. this event, again, brings to mind his own death, when he tried his best to save sheila and ended up paying the highest price for it. so, narrative-wise, jason is always punished for his kindness.

perhaps because of the nonchalant act that jason pulls off, many readers seem to miss that everything that happens after that arc is an upshot that follows logically from it.

jason's immediate determination to leave – and later a short period of indecision that ends up with his dramatic exit, pushing his team away, makes perfect sense when you consider what intense trauma he has just gone through. admittedly, i'm not a fan of the notion that he would give up at all (i think he's always ready to give up on himself, but not on the world), but then on the other hand, if there's anything that would cause it, narrative-wise, witnessing batman dying does sound like a good incentive for that. (it also has to be pointed out that jason seems to be confident that the rest of the team can go into the final battle without him anyway; it's not like he would go back to his earth not even knowing if said earth will exist tomorrow).

it's crucial to notice that following that crisis of faith (faith in fighting for the world) is followed by him raising up for the challenge again, but now... worse and even more confused. in the final confrontation with donna, jason antagonizes the superhero community, and when we see him at the end of the series (#1) his monologue indicates that he believes the capes to be naive. (significantly, he also focuses on bruce and offends the memory of 51 earth-bruce by calling him crazy; an action that can be seen as suppression of his own guilt and invoking, once again, a cruel symmetry considering bruce's engagement in victim-blaming after jason's death). this, once again, is consistent with the "no good deed" reading – jason diminishes superhero values because he has been continuously punished for living by them. (and unlike other superheroes, he doesn't have a support system nor skills in compartmentalization that would help him deal with this trauma) every leap of hope re-traumatised him. hence, it seems to be no surprise that jason decides to abandon the mask, and in the closing scene we see him without it. the promise of the shattered helmet is pushed to an extreme – jason does not get a new alt identity. he denounces the idea of superheroism completely.

and yet, what is ultimately subversive about the ending, is that jay is not truly a civilian and he does not abandon vigilante ways. he does the same thing. we see him without a mask, but he is clearly working a case. he might have rejected the symbolic dimension of the vigilante work, but he still carries the same delusional hope for bettering the world and protecting people that the superhero community does. only now, he is even more isolated and doesn't have any identity to go by (as he is still legally dead).

as such, the ending opens a new question regarding jason's understanding of himself and vigilantism, or rather the lack thereof. is it possible that vigilantism is really at the core of jay's trauma? and why, potentially, is it something that is so destructive for him as a character specifically? (and i have some answers for that, but i'm not going to get into it here, as it's already a very long post)

so, tldr; the genius of countdown is that it establishes jay as sensitive, determined, and fundamentally good (this is what the purpose of seeing him as batman is!), and then it brutally reminds the reader that jason’s tragedy is that on this specific earth, in this specific timeline, his love doesn't matter in the grand scheme of things. the story goes on as it did; one way or another, jay is trapped in the cycle of his care ironically creating rifts between him and the others, and bringing him to his own downfall.