The problem for Trump is that this tarnishes his image with the undecided voters; that he is a strong manager-negotiator.
Nope. The RNC surrender monkies never learned that walking away from the table is a legitimate negotiating tactic. This won’t hurt with the LOIN-voters.
It’s the opposite of Obamba’s, “You can have anything you want, but that’s my final offer.”
And that's exactly what he just did. He is not allowing Fox to make a fool of him. He controls the ratings, not Fox. Why should he help them, when he can do other things like this veteran's benefit? They need him more than he needs them.
A smart person doesn’t walk willingly into what he knows is an ambush.