You don't hear people say it about Martin, because most loved the show. Personally I think there are 2 different things we are talking about
One is just mufukkaz acting silly and/or stupid for jokey jokes
Other is straight up c00ning
There is a difference.
Why is it okay for cats like Sandler, Ferrell, etc to act stupid in movies, but when we do it, it's being a minstrel and/or c00ning? And most of the time it's only used against cats people don't like while others who are liked get a pass for doing it.
A black actress once said that when Lucy acts silly she's considered groundbreaking and legendary but when someone black does it its c00ning