This is exactly the point I'm making. Their problem was that they spoke aloud in a manner that does not properly reflect the sensibilities of someone they weren't even addressing.

EDIT: Herein lies the rub, and some might say the whole purpose behind CoC's. As a cop might say, you might beat the charge, but you won't beat the ride. Even if you've been tried by event staff for wrongspeak and found innocent, your whole experience is ruined.

If one did that one would, of course, be wrong, both in the general case (the jokes were silly grade-school level puns that would concern no well-balanced person) and the specific case (if anyone was being stereotyped or belittled, it would be males, given that they were telling the jokes about a male presenter.)