PC was engineered by Marxists to destroy culture and free speech. Making fun of PC is one of the only ways to destroy it. Satire and comedy expose the political correct memes to reality.
Free speech allows us to make fun of and criticize the INSANE crap that is being pushed on us through media. Without it, people start to get sucked in and brainwashed to believe in leftist causes. It is mental manipulation!
Go read George Orwell's famous essay Politics and the English Language. Orwell couldn't agree with your assessment more.