I think they’re relevant for people who like them. Most games I don’t care, but for games I really like it’s nice I’ll use achievements to see of there are things I haven’t yet discovered.

Sometimes it’s fun to compare to friends.

I don’t really know why they disable them with mods installed. If a person cheats and gets them all, who cares? It’s not like there’s actual value. If it makes them happy, let them be happy.

And yea, an opt out feature for people who don’t want them would be good, too.