I really don't think you have to be gay to like his humor. The point is, to the initial poster, you have to be NOT Anti-Gay to like his humor.
If you are disgusted by gay people, then you won't like hearing a gay person speak, which is where it sounds like the initial poster was coming from.
"Winning a Tony this year is like winning Best Attendance in third grade: no one will care but the winner and their mom."
-Kad
"I have also met him in person, and I find him to be quite funny actually. Arrogant and often misinformed, but still funny."
-bjh2114 (on Michael Riedel)