10:50 AM on 12/18/12
He doesn't only know those words in the context of which he uses them in his act. In fact, he spent the opening segment from the second episode of Louie listening, to a gay man, about what the usage of "f-----" means to gay people. Just because he hasn't been called that word doesn't mean he hasn't witnessed or been told of its impact from people that have.
You really think the sole purpose of comedy is to make people laugh? Do you also think music (in particular, punk rock) is only about cool noises? In many cases comedy bits, like songs, are also designed to make people think.
A classic example is Dave Chapelle's blind white supremacist sketch. The irony is funny, but the sketch points out how ridiculous racism is because the main character didn't know skin colour, and it didn't actually effect his friendships or his hatred of others. Satire is a way to bring the true absurdities of an actual topic into focus by way of an exaggerated display. If you thought George Carlin or Bill Hicks were doing their acts just for giggles, you are wrong.
Also, in your own football analogy, both sides agree that NFL football is harmful. The players have brain injuries, while the doctors admit there are risks (injuries). The scenario you created in your head and typed out doesn't have two sides to it. If A is debating A, then of course A will be the winner.
Those jokes were from a special he did in 2008. Seeing as he's been active in stand-up since the mid-80's, that's hardly early for him. Nice try, though.
the point is C.K. has made several comments in recent years that he regrets these very jokes.