It's ok to say "I don't know".
I'm going to have to side with D9954 on this one. The show parodied kung fu movies from Hong Kong cinema. Have the show's actors in the same outfits and facial hair as the old Hong Kong Kung fu movies was all a part of it and would have made little sense to have an Asian actor do it. I mean it is a charature OF THEIR OWN CREATION. There wasn't any malice in this, I think that's what people are forgetting is a component to racism. Could this be racial insensitive? Sure I could see that and an Asian person could certainly be offended by it. But it's a long stretch to call this actual racism. I mean they weren't paroding actual Asians, just the Kung fu master character that the Chinese cinemas created themselves.
But also, D9954 trying to liken this to Blazing Saddles isn't the best foundation for your argument. It does show that you don't have a clear understanding of the different types of comedy. There's a reason Blazing Saddles is one of Mel Brooks' most enduring works. It's one of the greatest pieces of satire ever written. The sterotypes made fun of in that movie were all done by their own races/genders/sexual orientations with a very few exceptions. Madeline Kahn's German with a lisp, while being incredibly funny, could affend a few people with speech impediments. I can see that.