I would not have a problem if he went somewhere in the Pac12, Big10, basically any conference but ours. Problem is, he made a lateral move.
While at TCU, he preached on and on about "loyalty," "you are my family," and "this is my home." He talked about how his family fostered others while he was growing up and how TCU student athletes were like his children, he talked about how TCU does things right.
Going to an IN CONFERENCE, IN STATE opponent is NOT "doing things right."
It lateral move in conference. Most coaches have a clause which prevents them making a lateral move. OSU sued Joe Wickline when he moved from OSU to Texas after it was reviled he was not in a play calling role. If players want to transfer in conference, they loose two seasons of eligibility. Hell, most normal jobs have a non-compete or post-employment restriction clause
Again, if he had gone to any other conference I would be happy for him. But, because he chose to stay in conference, he is nothing more than a snake oil salesman.
I'd rather someone be straight up like Coach Patterson with "never say never" than Del Conte's "this is my home" and "you are my family."