Not sure how much he believes this. He was on a talk show once where louis ck used the N word to his "friend" Chris Rock.
Rock was visibly shocked, the White host and audience laughed, and it was Jerry Seinfeld who wasn't laughing, that called ck out for saying that shyt.
He rightfully called that bullshyt out, as editors are right to call out offensive language in comedy routines and bits. ck felt completely comfortable saying in public what he had obviously said to Rock in private. Had Seinfeld not said anything, guests and audience would have just laughed it off.