@ploum also, these fedi spaces are not public infrastructure. They are bigger and smaller communities that have some common values (even if they can't clearly describe them).
Meta is showing up to a house party with a few busloads of people. Some might be great folk. Some might be terrible. We know what Meta's moderation track record is…
How can anyone be surprised that the people running a small house party are not keen on letting a few buses of people them in?