"According to the sources, Trump doesn't trust the Commission on Presidential Debates, the nonprofit organization that puts on the debates. Specifically, Trump is apprehensive of who will be chosen by the organization to moderate the debates, the Times reports."
He's right to distrust them.
I think he can turn a refusal to debate to his advantage.
The left will go even more ballistic, more crazy.
Let them.
As the saying goes, "don't intervene when your enemy is destroying himself"...
That applies to rhetoric, as well as weaponry.