That therapy is dangerous was certainly my experience.
It can be seen clearly with people who were sexually exploited. But I now believe that I was -- and perhaps other people may be -- especially vulnerable to what I call "narcissistic exploitation", because of my early life and experience, not all of which I knew about or could reasonably be expected to know about, I think.
It doesn't have to be that the therapist is a "narcissistic", or be conscious of what they are doing, just that she/he learned (from their early life?) how to get self-esteem gratification by "helping" people or by being an expert or by living their lives vicariously -- or many other possibilities. These are, theoretically, taken care of by the therapist's own therapy -- but far too often they are not.
Which leaves some of us vulnerable to playing into those needs of the therapists. My instincts about that kind of thing were numbed out, because of the family I grew up in, and numbing out was something that left me LESS vulnerable in that situation. Unfortunately, like in lots of life, that past pattern made me MORE vulnerable in other situations. Like therapy.
When the therapist's issues are triggered in therapy, and are too much for them, and there is a rupture which they can't repair on their side -- then, yes they may terminate the therapy. They can't bear it. They can't deal with it. They don't have "the emotional resources" to continue, as my last therapist said. What seems not be recognized as an issue in the therapy profession is that this kind of termination can be DEVASTATING to some clients -- it certainly was to me. And, OK, maybe that's because it was issues that I came into therapy with that made it so bad -- but, isn't that the point: I CAME INTO THERAPY WITH ISSUES, SOME OF WHICH I DIDN'T KNOW ABOUT, IN ORDER TO GET HELP. And instead got hurt.