I hear you. During the reddit exodus i left without having an alternative and stumbled upon lemmy much later. So i am fine going back to not having social media. However, a social network only survives if there is enough content. And if we are honest, lemmy barely has enough content.
Ill give you an example: I like climbing and there is !climbing with roughly 2 posts a month and !climbing with less. I am happy to see something about my hobby twice a month. But all my friends still are on reddit, because two posts a month are not enough to them.
If you click on my profile, you will find 4 posts. I am a natural lurker, like most people on the internet, i read, vote and maybe comment. These posts, i made them because i wanted to add some content to this platform. While facebook is federated, there will be much more content. We can see theirs, they can see ours. Sounds like a win-win, right? But it may also make lemmings dependent on facebook content. If there is always more than enough content to endlessly scroll, I don't need to upload my stuff to the network. However, if facebook pulls the plug after a long time, that leaves barely any content here and lemmy is basically dead.
I would probably still be around: Angrily clicking on some link about random big corpo, once a month smiling because someone shared a picture doing the same hobby as i. But for sure there are still people on old XMPP instances, while motivated dev's reinvented XMPP: Matrix