I think it honestly depends on the person
Ron Simmons (through all of his "gimmicks") never danced. Always booked like a badass (as Farooq Asad

outfit, Farooq in the nation, Farooq the Acolytes, Farooq in APA) and never danced
Ahmed Johnson...never danced
MVP wasn't a "dancing" act (he danced in the ring with some of his moves but it wasn't seen as "shucking and jiving" to me...no different than Cena's 5 knuckle shuffle or Scotty too hotty "the worm")
The Rock was corny in his young/introduction years but wasn't "a dancer"
Mark Henry wasn't/isn't a dancing act
etc.
I do agree that a lot of black wrestlers dance, but we have to remember that this is a VERY cheesy form of live entertainment. I know we all want it to be so much more (we talk about prestige and booking like it's NOT pre-determined

) but these athletes are actors and entertainers
Remember...
they booked a white dude as Lord Tensai
an Asian cowboy in Jimmy Wang Yang
a white guy as a jive talking black man imitation
they had a native American dancing and high stepping around the ring
Cryme Tyme

They've had women demean and embarrass themselves
a CEO wear a du-rag and say "nygga" on camera
etc. etc. etc.
Outside of the athleticism and the ability to suspend disbelief for a few hours a week, don't expect the WWE or any wrestling organization to have a "moral" compass