This happened to a friend of mine recently. Some woman posted their conversation to an instagram story, saying all my friend wanted was sex and implying that people should stay away from him. It seemed like she thought she was doing something courageous, when in reality she's kind of a monster. The dude did nothing more than unfollow her on insta after she strongly hinted that there would be no possibility for romance after he invited her to hangout. Instead of just getting rejected for a pretty standard way to meet people, he gets shamed in front of potentially hundreds of people. So much for ostensibly sex friendly liberalism. Screenshots of DMs are hardly smoking gun evidence of anything if your audience is heavily inclined to pile on, nor does it matter because that's a shit way to communicate anyway and removes from someone any kind of recourse. I couldn't have done anything because she had a private account, but I couldn't have done anything to counter it anyway because it was just an outlet form of social media.

My point is that nobody did a bad thing until someone actually did a bad thing, and I think that's most people's gripe with 'cancellation'.