I could see how it's a gray area in terms of "harm", but I'd say that there are a number of people on here who care very much about their therapists (or are married to one, or related to one, or whatever), and so for me it's like asking... if someone cheerfully tells my mom how much they hate all medical research scientists, because they're a bunch of amoral sociopaths without a conscience, are they harming her? I'm sure she'd like to leap to my defense, and would feel kind of crappy about it.

On one hand, that's just that person's opinion, and she should feel free to disagree with it and move on. On the other, I'm her daughter, and she believes in what I'm doing, and to have someone talk about me (in that I am lumped into that persons all-encompassing disdain for those who wield a petri dish) in such a way would be upsetting. So, while that person is free to have their opinion and to state it, I can't say I'd be super thrilled about how much joy they'd get out of telling my mom how much they hate her daughter.