Shit like this is just going to make the fediverse dominate, because it doesn't have to play by whatever retarded rules you decide the government should impose.

Say I make a small website. I get a userbase of maybe 100 people. But that website can network with other websites. And all of those other websites have similarly small numbers of users. Maybe it's networked with 100 other such websites. So we've got 10k users. All of them can talk to each other on the same protocol. I make a post, someone with an account on another website can comment on that post. They can send me DMs, add me as a friend, whatever. Now say the EU sends me a threat letter that I need to comply with their regulations or I'm toast. I tell my users the site is shutting down, and they all migrate to alternatives, taking their friends lists from other websites with them. The government now has to repeat the cycle with other websites. Meanwhile, for every one you take down, 5 more are popping up because bureaucracies are slow and inefficient.

Also, because each one of these websites is small and obscure, they will undoubtedly easily circumvent parental controls, which rely on blacklisting known bad domains.