Yes, Carlin is conflating several different things. He's also, unless Britain is vastly different to America in this respect, lying quite a lot because I have lived in some of the UK's most painfully right-on places and I still say toilet paper, false teeth, medicine, information, dump, car crash, used car, room service and constipation. About the only one of his alleged neologisms I recognize is "mobile home", which I think is what it's always been called in Britain anyway.
It's unfortunate, because he definitely has a good point in respect of management speak - "human resources" sounds a lot easier to cut down (or "simplify/streamline/rationalize" etc) than "personnel", doesn't it. But he covers it in irrelevant shite.
In fact, what has really become clear to me on this thread is that a lot of the "PC gawn mad" crowd don't have a massively sophisticated grasp of language. This is why they conflate totally different phenomena, and also why they apparently can't see the difference between (for example) a "black boy tree" and a "blackbird".
Oddly enough, this lack of nuance is something they share with the occasional oddball who really does think "blackboard" or whatever is problematic.