Probably. I don't think I have watched a single episode of his. He was ok when he was doing that Simon Cowell impersonation on that show-I forget its name-some America's got talent or some such.
But the guy he interviewed is a loon-nobody is saying Pierce Morgan is good for anything , just that the other guy is a loon. So trying to make this about Pierce is not going to change the fact that the other guy is a loon, who actually managed to make Pierce look like some sort of statesman.
If you support one issue and I am not a fan of gun control or most controls and a loon supports the same issue, I see no reason to support the loon too. They can be two different issues.