The King of the Iron Throne is in no position to threaten the North. The North is economically independent, and Moat Cailin is impregnable. The only reason King Torrhen Stark knelt in the first place was because the Targaryens had dragons, and their life under the Targaryens really wasn't any different than their life without them (the only difference being that the Starks couldn't call themselves King.)

He really couldn't hurt the north long term but he could hurt their allies.

And I guess that's the only part of my argument that you can in any way try to contest. I'm surprised you didn't even realize I was exaggerating when I said it would mean war.

I already responded to your other points. You want to act like your assumptions of Brandon Stark is evidence. It is not, get that throught your brain. I atleast know my assumptions of him are assumptions.