We have blameless postmortems after major incidents like "the app is completely down." The action items aren't always followed, even easy ones like "new PRs should not use X function, they should instead use Y function." Two days later a PR will be approved and merged that uses X function. So then I'll make a meeting a month later saying "here are all the action items from the last couple postmortems that I don't think we're following" and everyone will be in full agreement again, but still nothing changed.

So given that, I don't feel very comfortable pushing hard for any process changes. I already feel like I'm bordering on annoying.

The action item isn't easy if everyone has to individually remember it going forward. An easy action item would be to add a lint rule to prevent the X function from getting checked in, even if the author never heard of this rule before.

Well, I guess your options are:

* Trying to figure out a way to improve processes at your current job. (There might be a way that isn't or doesn't feel like "pushing hard". OR, your current job might just be completely uninterested and this is never going to happen).

* Finding a new job. (The job market is as good for software engineers right now as it ever has been for anyone ever, pretty much)

* Deciding to live with it

Oh. OK, time for a new job with a company that can learn from mistakes.

(Alternatively. you can try to be the force that turns this ship around -- but I don't recommend it.)

Look for a different job with a better culture.