If Wikipedians can do nasty anonymous writeups on professors or entire colleges and universities without consequences, why shouldn't professors at those institutions be allowed to direct their students to vandalize WP pages without consequences?
Nobody is saying Wikipedians shouldn't be allowed to gripe about that sort of thing
on Wikipedia, but nobody gets to call
User:Zoe's employer either, when s/he does something abusive towards an outside organization, do they...?
Maybe people like Zoe who do that sort of thing should be required to fully identify themselves on Wikipedia beforehand, so that people will at least know who's accusing them of malfeasance.