I think it's quite a difference whether your boss already knows (or thinks) you can do the other job and still tries to not pay you the bump and you doing the extra work to get noticed.

In my case it wasn't even to get noticed. I just care about stuff. My current boss is actually trying to make me 'care less'. Like I can't leave it alone if I see the PMs do a crap job and I try to fix it. I can't not say something when I see the DevOps guys not taking care of the dev envs and dev experience.

Also when did this start? Like hundreds of not thousands of years ago. Why?