Not American so not very familiar with those two, but I did see Rock's infamous n-word bit, and I just found myself thinking 'yeah, but that's just about class-distinctions within the black population, and class prejudice is as problematic as racism, we know these distinctions exist, I've heard it before from the black people I know, this isn't news'. And getting all angry and ranty about it doesn't make it funny.
Likewise I recall him doing something about 'no food intolerances in Africa or Asia' and the only thought was 'er, actually many East asians have trouble digesting lactose, its almost the norm there'.
Stand-ups all seem to be too egotistical to me, even the ones I might politically agree with just seem to be lazily preaching to the converted. And over here they are _everywhere_ used to present every other TV program.
I'm fine with sit-coms though. Somehow those are different. E.g. Seinfeld the show I liked, Seinfeld the stand-up does nothing for me. Same with Ricky Gervaise and the Office. Maybe it's 'cos you don't have to actually like or agree with the characters in a sit-com? There's more depth and less egotism to it than there is in stand-up.
But it might just be me not having the right sense-of-humor, I admit that. I'm not arguing stand-ups should be banned or something, I just can't get enthusiastic about any of them, and it really wouldn't bother me if they all disappeared as a profession (whereas if musicians, say, all vanished tomorrow I'd be upset).