There are a lot of things people assume about D&D that I don't personally think they should, so...controversy or not, maybe some assumptions merit being questioned.
So if the host says "Get the hell out of my house" and nobody else can host, that's it? Again, seems kinda funny to me that the GM's role is essential but the host's role isn't.
Not the way people speak about it around here.
As always, you make this advice without considering the social cost of doing this.
It is no simple matter to nope out of a game. That has a social cost. Sometimes a steep one. Given people talk so extensively about the "social contract", you'd think this would be even the teeniest, tiniest bit included in their discussions of it. It never, ever is.
Leaving is a form of breaking the social contract--and leaving first means you're the one in the wrong. Yes, I have seen this happen. Yes, it is incredibly, monumentally frustrating. No, it is not some weird aberration that never occurs except in bizarro circumstances.
Not in my experience!
Because putting your money where your mouth is has a substantial social cost, and people often quite rightly fear paying such a cost.