I have a few subscribed subs there for self hosting and a few other subs related to Linux and the sort. (I know the fediverse has those too! :) ) only because the majority of new updates or announcements for selfhosted apps and tools are made there only.
I used to be a mod and stopped posting during their protest and haven't posted since. I also ran a userscript to delete all of my posts and it seemed to have scrubbed my history correctly there. I'm a lurker there and their new design really has gone to heck. I have uBlock origin and AdguardHome running on my network and their pages don't play well sometimes with errors displaying what I assume to be ads.
GTAV online - I would totally end up being screwed with all of the mayhem in the public lobbies. I told my wife I think we'd probably be an unseen NPC homebodies never setting foot outside and ordering from the Pizza place. :)
If it was the GTAV Story mode, I think I'd be much better off and be part of the beach groups as I love the ocean IRL.