Every time I see a story, be it canon or fanfic, where Jason is like "wow my morals are kind of fucked up I should never kill again" I have to put it down, close the tab, ect. Because HE WOULD NOT FUCKING DO THAT. We're talking about Bruce's number one fan turned antagonist.

Do you not think he's maybe already considered such a thing?

The thing about Jason is that he's as devoted to his views and sense of justice as Bruce is, maybe with a little more flexibility (i.e. he's willing to temporarily stop killing if it's necessary for his overall goals where Bruce wouldn't be able to kill even if it would benefit everyone in the long run) and any run or story where he completely disregards his own moral compass and personal experience to follow Bruce's rules is just a disservice to his character.

His whole thing is that Batman's methods are ineffective and his unwillingness to either do what needs to be done or let someone else do so is a clear sign that he's not the hero Gotham needs. Jason genuinely believes everything he says about the system, and Bruce's ineffectiveness.

His crime lord era wasn't just a silly little thing he did to fuck with Bruce with the final confrontation as the REAL point of Under the Red Hood, he became a crime lord because he believed it was the best way he could help. The point of Red Hood is protecting Gotham, fucking with Bruce was just a bonus. Like the confrontation wasn't even initially planned, Jason haphazardly threw that at the end of his to-do list after he realized he couldn't just blow up the Batmobile.

Stop reducing Jason's motivations to "get Bruce's attention/make Bruce kill".