I wrote this in martyn's stream chat but I wanna elaborate more because hhhhh brainrot: 

I think that the canary's curse is especially fitting this season because miners tried so so hard to save the canaries when they started dying but there was only so much they could do because of limited technology as well as, well, they didn't really know what was wrong until the bird was actually dead, much like how everyone tried to give Jimmy time and trying to keep him alive.

So many people this season did so much more to try to keep him alive; is it past memories of them failing so many times before? (Scott recalls the first time, where they just didn't have enough time-) Is it simply pity for someone you know was made to die from the start? (Etho regrets his kill, but not enough to think twice in the moment. His job is to die, after all.) Is it spite? Rebellion? (Maybe if Grian could keep him alive there's hope for them all yet.)

Regardless. Purpose is hard to fight, and the cycle continues.