A lot of Americans think that American freedom of speech applies to the internet as well, even to internet sites hosted in countries other than the U.S.
The restrictions about what you cannot say against the U.S. government are actually pretty specific - you can't advocate the commission of a crime with the intent that somebody actually do it or that somebody is
likely to act on it and do it. So, for example, if I were to say "somebody murder Taek Jin Kim", that would probably be criminal (it's not here because it's in quotes, since I'm not actually advocating it). However, I could say "let's lobby the U.S. government to nuke Seoul," because lobbying the U.S. government is legal, and if the U.S. government were to to give the order to the military to nuke Seoul, that would also be legal (under American law - it would violate so-called international law, but that doesn't apply in the U.S. without the U.S. agreeing to it, which it hasn't).
I'm not advocating nuking Seoul either, by the way. That would hurt our kibun (besides, probably a lot of people would hesitate to play CoH even if we got up and running again if the price for making that happen included millions of people's lives. CoV on the other hand... well, that depends on whether CoV players are really villainous or if they're just pretending to be.
).