I feel like the whole time this was being argued and passed, everyone in power just considered the internet to be the major social media sites and never considered that a single person or smaller group will run a site.
IMO I think that you're going to get two groups of poeple emerge from this. One group will just shut down their sites to avoid running a fowl of the rules and the other group will go the "go fuck yourself" route and continue to host anonymously.
Does this shock you? I don't recall a time in memory where a politician discussing technology was at best, cringe and at worst, completely incompetent and factually wrong.
If we exclude politicians whose tech awareness is curated by lobbyists, Ron Wyden may be the entire list.