He might be, but if so, he is too clever by half. He has tapped into a huge amount of anger that may get out of control and force him to run with what he is saying.
At this point, I am SO pist at the Establishment that as long as Trump is running, I will vote for him.
Nobody else, at this point, has the traction. Besides, his message appears to have stiffened some other political spines.
When FDR appointed Joseph Kennedy Sr. to be the first head of the SEC, he said, “it takes a thief to catch a thief.”
I guess thee same logic might apply to DT. It takes someone from the establishment to take on the establishment.