They're still around, but it feels like no really cares all that much about them anymore.
Personally: I used to work my ass off for certain achievements, and will still try to get at least most of them in a given game, but I'm not willing to put myself through the level of hell that I used to for that one fuckin' achievement almost every game has.
I have so many games to play, I really don't care to just check boxes. Once I get the most of the experience, I'm off to something else. The games I truly love I'll revisit again but I don't need to do any grindy completionist tasks to check a box somewhere