Point number 2 is stupid, technically "nigger" at one point just meant black person. It wasn't particularly racist and even people who didn't kept slaves - hell, people AGAINST slavery, still used the word. Also, he's stupid if he thinks words like "faggot" "retard" and racial slurs don't have a long and terrible history. I mean, "faggots" were rounded up in concentration camps and institutionalize in asylums for a "disease" and like, 75 or so years ago it was perfectly acceptable to drop off your "retarded" kid at a home where they'd likely be neglected and abused so you didn't have to deal with them. I mean, if you want to go WAYYY back there was a time where "retarded" babies would just outright be killed.

But yeah, those words are fine? The only reason faggot and retarded are more acceptable is because, well, we let them be. I don't know why, but even I won't really say the n-word but have said retarded plenty of time. Also, i don't know if maybe the period of time has anything to do with it; like calling someone an n-word has been considered wrong a lot longer than calling someone a retard, which was the actual medical term not too long ago (when I was a kid my mom worked as a nurse for a home with elderly people who were, as they called it there, "mentally retarded)