Crowder IMO is not ridiculing down syndrome. He is ridiculing the idiots that came up with a down syndrome doll.
To be fair, the market for it would have to be teeny tiny. I would think the doll would cause a lot of aversion to it from their usual customers.
It is clearly an effort to virtue signal.
Mattell is virtue signalling and he is calling them on it. A downs child wouldn’t care what doll she had, she sees herself as normal.