Indeed, that's why I didn't bother arguing with him on that point. Aside from saying his views are ethnocentric.
But he can't sit there and argue it's legitimacy by Nord law because in Skyrim it's perfectly legal. And that's the main problem with his argument, he goes on to state that it's not the best way to do things, then quotes Tullius of all people, which I'm not sure if he's talking about the actual Tullius or the guy playing Tullius, then makes up shit about the history of the moot, all factually incorrect.