I think it depends on what you mean a lot by "think". Did they wake up thinking, "Hey, let's go for some misogyny today"? Probably not. But on the other hand, it's not like their behavior is random, patternless. People often do things without really understanding what it means. Indeed, given how hard actually understanding a global society and its history is, I'd say we almost never totally understand anything we do. It's a big world, and people are universes unto themselves.
One book you might read here is, Bancroft's "Why Does He Do That? Inside the Minds of Angry and Controlling Men". It's written by a therapist who mainly dealt with men in court-mandated therapy programs related to domestic abuse. Few of the men ever saw themselves as bad actors. There was always a reason they were justified in their abuse. He goes into great detail examining how abuse worked well for them.
I also think you misunderstand the systemic nature of things like misogyny and racism. You are effectively saying it's the job of women to fix sexists. Putting the burden there acts to support sexism. That's true anywhere, but it's especially true when we're talking about academia. Look at that UMich CS professor: he had many opportunities to understand his behavior was wrong. He surely heard it from women. He certainly heard it in trainings; "don't grope the students" is something every professor knows by now. Ignorance is not the problem, and suggesting that women with little power should educate men who can ruin their careers only helps abusive men.
Ignorance can be the problem in specific cases, of course. But even there, individuals are responsible for their own behavior. If men would like to not be sexist, they should study the topic. For the HN crowd, I might suggest Manne's "Down Girl: The Logic of Misogyny" and the follow-on book "Entitled". Both are sharp, readable, and very analytical looks at the topic.