I didn't call him an idiot for his opinions on MMA. I called him an idiot because he's a pretty terrible person who holds some pretty idiotic political views. And being the mayor of New York doesn't make him a great mayor.

And a rear naked choke rendering someone unconscious in seconds does not make MMA more brutal than boxing, nor will anyone likely die from it in competition without some form of preexisting condition which should preclude them fighting all together.

Not to mention outside of the ring, beating someone's head with hundreds of punches will usually knock out/kill them as well. But losing to a rear naked choke a few times in your career is far less likely to see you retiring with brain damage.