Rules for reporting other therapists boundary violations learned about in session?

My therapist of nearly a decade fell in 'love' with me, violated nearly every boundary, and put me through a lot of pain. I later learned that they had previously been married to another client.

But that's not what this is about.

When I went to get a new therapist, to talk about my old therapist with, three out of every four I initiated contact with refused to guarantee my confidentiality and said they would feel ethically obligated to report the previous clinician. One told me she thought I'd have a hard time finding one who wouldn't.

This made me pretty mad, because it's clearly not a legally mandated report category, so I'm not sure why I wasn't automatically guaranteed the same privacy every other client is.

I can't help but feel that denying the protections of the profession to those who've been harmed by it is another form of active harm.

I did find a therapist eventually, and she and her supervisor agreed that anything I told them in session about the original practioner was protected by confidentiality.

Unfortunately, after a while she had to suddenly close her practice due to family issues of some sort.

When I went to get another therapist I ran into the same problem. Everyone hemmed and hawed. A couple agreed with me initially and changed their mind after talking to supervisors.

I've been through the ethical codes of all their licenses and I really can't see anything that suggests confidentially about non mandated issues are waived to protect the profession over protecting clients.

I did find a new therapist, and she's nice, but we did have to do some gentle negotiations to get her to come around.

How is this not a settled issue? Especially with the shockingly high prevalence of sexual boundary violations (5% to 10% of therapists)?

I'm just genuinely really hurt and frustrated, because people in my position aren't going to seek help if they can't control their own story and are forced to report someone who they may still be entangled with and have complex feelings about.

Again, how is this not a clear cut and settled issue (one way or another)?