Earlier quoted context omitted.
> What often happens is that the person who reports harassment is then punished because people no longer want to talk to her. They keep her out of the loop on casual stuff, but lots of professional discussions happen in casual contexts. Over time, she gets iced out for reporting illegal behavior. I think this really depends on your team dynamic, and I wouldn't necessarily be concerned about this point (as valid as it…
Alas, you don't know what will happen until it does happen. It could be as simple as "Wow, Joe reported Bob for sexual harassment, but Bob didn't do anything wrong - I was there. Now I have to be extra-careful around Joe to avoid getting reported myself!" And there you go - Joe is now suffering from "retaliation" and being treated special for speaking up.
Male professors avoid being alone with female students. Male colleagues refuse to work with or to a lesser extent, refuse to be friendly on any sort of casual level with female colleagues entirely just because of the small risk that an accusation could cost them their job/career. This fear actively harms both genders.