He is running for President of the United States. Not for President of the Conservative website club.
Like it or not, candidates need to go on these shows too, not just preach to the choir.
Even a little superficial thought would show how insane this statement is. Is he the president of everything deplorable in the United States? Is he President of all the rapist, robbers, pedophiles, anarchists, sworn enemies of this country?
We compartmentalize and separate from us the worst in society that we deem unworthy of assimilating. It can be strongly argued that the President doesn't represent that, but repudiates it.
These witches represent the worst of the worst that our society is devolving into. They don't deserve a place at the table. The fact that we've given them a place indicates a grave sickness in our national identity.