I mean there’s Reddit ofc, as well as Twitter in its entirety, Discord is implementing some dumb updates, there are issues with Tumblr as well as everything to do with Meta, and I’m sure there are plenty more (and I haven’t even touched other digital media, for example the Sims). Why is it all happening in the span of about a couple months?
Over the years there’s been a few major sites destroyed by shitty decisions. It’s just been awhile since the last mass exodus. Really I think Twitter is well on it’s way out but we don’t hear about it much because nothing has obviously jumped out as a clear alternative that everyone will be happy to jump to. Reddit is just in the beginning of it’s downward spiral and as much as I’m enjoying figuring out this fediverse thing It’s not trivial and I’m not your average user so I don’t see it exploding overnight.