So as a user you should actually be more concerned about what regulations exist in the region you're living, not of the region the server is histed. Because that's the law you have to abide by.
Worst thing regarding the law of the server position is, that your post will be deleted / account will be banned.
And in the context of Online behavior I would argue, that in general all American/European laws are the same.
If we want to talk about details: In germany a very serious crime that is activly enfored, is to downplay crimes of the nazis. Even something like saying "trivial thing x is as bad as what the nazis did" could be interpreted as such a crime.
OK, if there is a monopolistic instance between you and the rest of the world that decides who can reach you and who not and you are depending on that single monopolistic instance, I think we all agree that this is a bad thing.
Potential threads from this are (but not limited to):