Oh gosh, thank you! I appreciate you sharing. I am so sorry that you went through all of that too. Yes, I was there too when I naively thought that being open about MH issues to therapist friends would be no biggie.
I had similar things happen to me, and can resonate with you. One therapist friend also was preoccupied with what's "healthy" and not "healthy". It was funny when she would lecture me on dating/relationships/how to be, when she would tell me about her dysfunctional romantic relationships. She was also very nosy, where she would ask questions that most people understand are tactless . What was hypocritical to me is when she wanted me to open up about all of my problems to her (she told me that being private is unhealthy), but then would turn around saying "I don't want to hear people's sh*t. I already do that for work". Uh...don't ask people nosy questions and push them to open up then? Haha.
If we want to talk about what's healthy, it's healthy for me to avoid manipulators as well. Not be someone's guinea pig!