999/1000 users won't do any research on how 'this new fb thing' actually works beyond 'where can I sign up'. All they want is a stream of content which the greater fediverse provides free of charge. It is going to be the whole Reddit situation with one more step. Portray yourself as the shining beacon of love and liberty, slowly start creeping in more monetisation and then build a wall once you get big enough. Meta and the overwhelming majority of the user base don't care who is morally 'better'. That's not how capitalism works.