You're exactly right. I've seen that bit and it's 100% spot-on. I don't know why CR felt the need to disavow it. It was funny & true at the same time and I don't recall him getting criticized for it.
Anyway, the point is: if you're black you can say what Scott Adams did and get away with it. If you're white, nope.
Hypocrisy.
It's not a mystery, he wanted to do those "Madagascar" movies.