Lemmy supports horizontal scaling, so in theory it is only limited by the amount of servers you can afford. Of course there are always unpredictable bottlenecks which need to be fixed, but no inherent limitation.
So far these problems are mostly theoretical, in practice Github works fine. But once Forgejo gets federation working we will probably migrate to a selfhosted instance.
They were posting spicy memes but thats how the internet works. If you dont like it then dont visit there, just like you wouldnt visit 4chan. Lemmy is open source so anyone can use it for any purpose.
Lemmy is licensed under AGPL which states that everyone can use it, there are no restrictions based on politics. Besides, “right wing” is not the same as “evil”, the real world is much more complicated than that. If you ask me, the whole right-left classification is way too simplistic and doesnt make sense anymore (if it ever did).
Telegram isn’t perfect, but it is infinitely better than Whatsapp because it doesn’t belong to Facebook, and also isn’t from the United States. Also it can be used by normies without problem, unlike Matrix or Xmpp or what have you.
Releases are always for backend and frontend together, unless mentioned otherwise. You can check the tags in the git repos, or check the available versions on docker hub.