For good reason, many wrong things are completely legal, and still should be condemned.
If you are a journalism professor and are unable to recognise disinformation when you see it (e.g. Seth Rich conspiracy theories) then it calls your job competency into serious question. Yes, the firing would make Temple a better place to learn.
> try to ignore everything that Weinstein has become since then
I feel like this is difficult to do. I'd sort of argue that "we caught a bad faith actor early" is a good thing. Maybe you could argue that Bret wouldn't be what he is today if he weren't fired, but I don't really find that convincing.
It's a violation of the TOS. The recourse is Disqus cuts the offender's access (either the individual or the institution) for violating the TOS.
1) a false statement purporting to be fact (he says she wrote what she says she didn't)
2) publication or communication of that statement to a third person (yes, the doxing)
3) fault amounting to at least negligence (maybe debatable, but he accused her of writing something knowing only that an account registered to her posted it. He never asked her about it and has already admitted fault in accusing her without asking.)
4) damages (yes, her career)