I imagine that Twitter being blocked in Europe might actually lead to some of those sources moving elsewhere to continue to reach their audience. I'm not a big fan of blocking websites either in a general sense, but a I can see why countries would want to avoid having what's happening to the US be repeated within their own borders, and that seems to be a distinct danger with Twitter. There's a pretty good argument to be made that that's literally its purpose at this point.

Dismantling legitimate governments with disinformation seems like a pretty viable power grab strategy for billionaires trying to create a megacorp hellscape where they get to do whatever they want until the planet becomes uninhabitable for humans some time after their own deaths.