Kendall's already hurt his kids by not caring about their safety in the presence of his father. His brown child was harassed by a guy wearing the shirt of one of the right-wing commentators he has on his network, and he went and let Roman call the presidential election for the neo-Nazi hours later.
Who gives a fukk if Kendall is hurt? He's hurt his whole family time and time again by being a drug-addled loser who cares more about running a shytty right-wing company full of commentators that he's hired to talk shyt about people like his daughter than he's ever been shown to care about his kids or his now ex-wife. Why do Kendall's feelings matter more than any of their feelings?
Because in the real world, that’s how the feelings of women and children are viewed. Especially in those circles lol So the viewer naturally sides with him.
And now that his dad is gone and he’s filling that spot, his feelings take precedence.