I admit my premise about reneging could be wrong. The Reagan thing seems apples and oranges. Existential threats versus hurt feelings.
If Fox were smart, they would offer to let Trump submit the questions that he was allowed to be asked.
I just realized you got the debates mixed up. The MK question was the first debate, while Cruz’s taking on the media was in another network at the 3rd debate, I think. He did do an excellent job of it.
A leader knows when to not walk into an ambush. If or when they attack Cruz the same way, you’d agree perhaps.
As long as you abide in your mindset...that it's merely about "hurt feelings," you will continue to experience losing. At least it's familiar and comfortable.