The "Political Correctness Is Just Politeness" Ploy: Alyssa Rosenberg Edition

Well, here it is again.
   How can anyone who's motivated to write about this issue misunderstand it so badly? And how did that thing about the parents get in there? This simply isn't any kind of PC issue I've ever heard about--and I follow the debate pretty closely.
   How it is that someone can purport to defend PC without mentioning campus speech codes, "safe spaces," "bias response teams," "microaggressions," "deplatforming," goofy euphemisms, brainwashing in freshman orientation, "rape culture," Title IX madness or any of that stuff...is utterly baffling.