The size of social media now is so gargantuan that almost every single member you get in an independent community will have been molded by it in some way, which is very different to how the webcultures of the day functioned.
My experience running a small community post social media explosion, is that most newcomers want to treat it like Twitter - Personal Edition. They want to engage in recreational outrage. They want to be obsessed with America-centered identity politics and put down other people for not joining 'their' side.
It's a far cry from the types of people I once met online. There is no sense of "The internet is not real life.", because, for so many of them, their internet handle is their real life identity, and any joke against it is a strike against their moral fabric and an attack on their very being.