I was basing it on things like people becoming legal adults at 16, and assertions like Cersei's, that the throne can stand in loco parentis and give away Sansa's hand in marriage, since her brother, who would normally have that right is attainted. The implication was that Sansa had no legal right to refuse, not because Joffrey was giving a royal command, but because he was exercising his paternal rights. My point about breaking the betrothal was that Lyanna was not yet old enough to exercise that right, and had no more capacity to break her betrothal with Robert than Sansa had to refuse to marry Tyrion. As for the age of consent, there is no indication in the books that extra-marital sex is permitted, even if the prohibitions against it are only honored in the breech.

I was, and usually do, try to argue within the context of the story's rules. I know this is not a real world, that the family trees, for instance, are grossly oversimplified and the courts described really stripped down and minimalistic, along with a host of other stuff. I don't care whose mind I change or don't. The point of getting into these discussions is just for fun. When I want history, I read history. When I read fiction, I enjoy getting immersed in a world, which is why I don't give a crap about the literary merits of an author, so long as they can suck you in, and keep stuff consistent.

That's why, for Captain America, for example, I don't complain about the differences from the 1940s, I complain about inconsistencies in what the characters say. If they want to come up with absurd in-story reasons why Steve Rogers should get the benefits of this magic process, fine. But don't try to give me some half-assed philosophical assertions of his moral superiority, delivered by a doctor hitting the booze with his patient the night before an experimental procedure. I can suspend disbelief in just about anything, but don't try to sell me on moral rights and wrongs because a guy with superpowers claims something is right or wrong.

I don't see how my complaints are any more absurd than yours about the languages 99% of the audience doesn't speak. If they go on too long for your taste, they are not exactly intruding on your attention the way a verbal rant might, and these are trivial topics of discussion, so much so that I don't take time to edit this stuff (which should be readily apparent from the spelling and grammar mistakes), or rework it into a more organized form than my stream of consciousness.