According to informed (and as far as I've seen uncontradicted) accounts Steve Bannon is brazenly lying about Shapiro's relation to Breitbart. What, exactly, were his efforts to "take it over"? They really want to make the truth irrelevant so they can force some unanimity.
That's why mantras like "nobody likes you," "nobody believes you," etc., get repeated ad nauseum. But they have nothing resembling unanimity. They want people to be afraid of challenging Tucker, afraid of challenging Megyn, afraid of challenging Vance because they're ready with
a zombie-invasion style pile-on. Hence the constant emphasis on lowering inhibitions ("no more playing by the rules"). Maybe that's what makes Owens the exemplary figure here--she's shamelessly shed all inhibitions, so they stand by her as a model of possibility. She's their
Hulk--"you don't want to see what happens if I get angry." All this will trickle up to Vance in various forms. If he's not able to handle it we can assume there will be lots of other things he can't handle.