The definition I operate by is close to the American constitution interpretation, where even then by the way, has limitations to it. The concept of free speech exists to support the ideal that anyone should be free to express their opinions and ideas without needing to fear retaliation, getting into legal trouble or being censored. If said speech becomes of illegal nature, threatening or a whole list of other sentiments, then freedom of speech isn't something to hide behind any longer. In the real world, law enforcements would get involved with bomb threats - You wouldn't get away with "It's my right to say what I want!".
And Larian is a privately owned company, thus their social platforms aren't the same sort of public space as the park down the street is. Even there, police would wrinkle their noses and have a chat with you if you began being rude or antagonising towards other citizens.
So no, it's as simple as 'behave or be talked to' on most privately owned places on the internet.
Besides, is it really that difficult to be asked to simply behave?