“A concept that was intended to create greater freedom in the country...”
Bald faced lie.
Political Correctness was brought to the US by members of the Frankfurt School of Marxism and was meant only and expressly to force people to limit what they allowed themselves to think by forcing a limit on what they could say.
Political Correction was also specifically made to change constantly so anyone could be targeted for punishment for not being perfectly in tune with the day’s permitted speech.
It’s a dirty damned lie and to make things worse I fail to see how restricting speech could increase freedom.