The biggest issue is you get so many people who sees say that silly feminazi group at college in some utterly stupid protest for something absurd and decide they are meaningless and can't change anything so nothing should be done to stop them. But 20 years later that group is now in positions on school boards, unions, hr departments, wherever. Then they start to get the power to enact some of their ludicrous PC standards on larger populations and they do get to actually change things that effect a lot of people.
The way a lot of the american universities are going as with your list along with many many more things, including severe and draconian policies around rape... as in, a man accused of rape in a college can be one semester and $150k into his degree and get thrown out by a false allegation with zero proof at all, not even a proper investigation. There is one case where a guy has absolute proof that the girl lied about it and was with her current boyfriend at the time of the alleged rape and they still threw him out of school, won't let him appeal and did nothing to the girl.
These types of people are starting to get into serious positions of power that can effect the thinking of what is right and wrong for the next generation and the one after that. If every college kid for the next decade is taught that free speech is bad, that saying anything remotely offensive is terrible and to be avoided at all costs, that men can be manipulated at will with the threat of being accused of rape and having their life ruined while women proven to have falsely accused not only get away with it but excused by society at large... well as you say, not the world I want to live in particularly.
You let the stupid little ideas go and 20 years later they become bigger and even more stupid and far more widespread and accepted.