"Why - he said as quoted - isn't that enough?"

Context is everything.

Most stand up comedians play a character and script their shows.

Russel Crowe played a skinhead in the film "Romper Stomper"

The character he played was a vicious hateful man who went round bashing up vietnamese immigrants in Australia.

This doesn't make Russel Crowe a vicious hateful man.

Furthermore, there are different types of satire, political and social.

I can imagine a context in which the alleged joke above (by which I mean it is allegedly a joke) is both clever and funny.

Though as it stands it is pretty uninspiring.