Carlin would have no problem calling somebody queer, tranny, or retarded for example, and definitely wouldn't let people tell him what pronouns he must use for them.
I actually think he'd welcome individual 's taking control of language in that way. I can imagine a routine about "Language can be so hurtful. Like 'gay.' Gay is such a nice little world. A light word. You imagine people having a day off, maybe wearing colorful clothes in the park. Then the homosexuals were tired of being called 'Queers.' So they wanted something happier. Colorful. Let's use gay! Now, people try to be ugly about the very same thing they called queer by calling it gay. This is gay. That's gay. That guy sounds gay. A gay-guy. That movie's gay.
But now! Oh, look now! We don't have to vote on words as a movement. Instead of the entire gay community deciding what to use, instead of gay or queer or faggot, each individual can self-identify as whatever-the-fuck-you-want!
I, they say, am of the group of black men who feel deep down that they're Chinese women who are attracted to Indian women who believe they were gay Latino men in a previous life WHO felt they were a reincarnation of Marie Antoinette AND who currently shave their legs but not their armpits. That's what I self-identify as! And the word for that is...
....my secret.
Then no one can hurt you! They'll try. "You faggot!" "Sorry, dude, that's not what I am. The word slides off my back, doing no harm."
"Oh. Then you're queer."
"Nope."'
"Nigga?"
"Not even close."
"That's gay..."
"Wrong again!"
"Can you give me a hint?"
"Okay. It's one of 31 flavors at Baskin Robbins. Local availability not guaranteed."