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.