Too strict in-game communication rules

[Jeeqbit]

Some people might tell you're trolling with part about SE's house.

No, I am not. I am speaking from experience interacting with SE's GMs when I reported someone. They were extremely apologetic that they allowed this person to behave this way in their game. That tells me that they see it as their house and want everyone in it to behave respectfully.

And guests don't exactly pay for visiting.

You may believe that, because you pay, you suddenly have the right to be as rude as you like. That isn't how it works and a restaurant would kick you out if you were rude. In fact I did get kicked out once. I once told the cook in a restaurant that I thought they should improve their diet (I was genuinely concerned for them based on how they looked if you catch my drift). I got banned from there for life.