There are lots of things that I can do as a private citizen which are legal which I cannot do at work. Why? because my employer forbids them. A man can make a sexist/obnoxious/hostile comment to a woman in his private life and it’s on him and the woman. If he made the same comment at work and the woman objected, he’d likely have to take sensitivity training, be put “on notice”, etc. Do you have a problem with his free speech being stifled? He is free to go to a bar or a party and be as obnoxious and hostile as he wants with his words. But at many companies- he cannot say those words at work.
This professor didn’t run afoul of Oberlin because of what she said. She ran afoul because her workplace has different standards for speech than the town square or the sidewalk outside city hall.
Why does this give you heartburn? Do you know how many issues HR folks have had with the words “C^&” and “P^&” since the latter part of the presidential campaign? Do you know how many men feel free to use these words casually in conversation, at their workplace, with female colleagues, subordinates and managers?
No, you can’t tell a woman at work that you are going to grab her by the ^&*. And it is not an infringement of your constitutional rights when you get in trouble for doing so. And it doesn’t matter what our president elect says or does. You don’t like it- find another job.