More of a technicality, but since both parties are in a dwelling it's not really applicable in this case.
Secondly, you have what Evan said.
And thirdly what Maurice said.
Fourth, if we apply the US Brandenburger test to the situation Nutty would be completely innocent in the eyes of the law.
I don't know what Nutty did but to me it looks like Hekko (and some other guys) you are trying to justify insulting or any form of offensiveness in chat. You say that the Spartans weren't mature enough to use the mute button, but if Nutty was mature enough not to insult they surely shouldn't have needed to use the mute button? If you are going to call someone immature for not using the mute button and you are justifying the other guy insulting, or at least saying what Nutty did wasn't wrong ... that is rather weird if you ask me.
I am not calling what Nutty did mature. But the fact that he was not being perfectly polite does not validate what is being done to him, nor the precedent that is being made.