I dumped Facebook a couple of months ago. I can’t really speak to who they are dumping.
It really is a waste of time for me.
I don’t use it either but a huge number of people and businesses do. For many people, groups and businesses, social media is how they reach the world. It has become the public square.
When email and payment processing sites start censoring, and they are, it will affect so much that it is mind boggling.