Thanks for those links; I had to scroll way down the page to find any attempt to back up the claims of militant Political Correctness.
It's a clickbait issue that creates a lot of divisive discussion. I would suspect that for every clickbait story focusing on PC intolerance, there are dozens or hundreds of incidents where no attempt is made for one side to shut down the free speech of the other side.
The term "PC" was something I first heard in the late 1980's on my college campus. It was used as an attack word by conservatives who seemed too thin-skinned to handle listening to views that differed from their own. It seems like just another example of a classic conservative tactic: take an issue where you want to avoid debate because you're vulnerable on that point, and levy it as a pre-emptive attack against others.
As one notable counterexample, and possible counterbalance to these stories, here is a link to a campus preacher "Brother Jeb" who has been yelling at college students for at least 25 years for being "sinners" and "sexual perverts". If someone has forced him off campus in those past 25 years because they didn't like what he said, then I'm not aware of it.