I think that clients who really are not highly educated about professional boundaries and relationships are most vulnerable to the people who unknowingly or knowingly exploit them.,
Clients of a professional therapist should not be in a position to "decide" if professional therapeutic breaches of the codes of conduct, and appropriate boundaries, training and supervision are or are not putting them in an even more vulnerable position.
This is a dangerous territory, and the people who pay for it at the end of the day are the vulnerable people who are being exploited, being being the "special" ones who get the approval, attention and friendship of their therapist. This, to me, fits the criteria of "grooming" that is done by sexual predators - emotional predators can be just as dangerous.
These situations end badly for the people in therapy who are often getting their needs addressed and feel heard, often for the first time in their lives. Those who have lived with immense deprivation are ripe for the picking as can be see in this thread and other such threads around the forum.
It also ends in people going back to reengage in a therapeutic relationship with people who have been in jail for their breeches of professional conduct, which doesn't seem very sensible to me. I have seen this occur even when those "professionals" have been involved with very serious breaches with children indeed. The vulnerable go back to the psychiatrist, the psychologist - because they "believe" that these people have been "falsely" accused. It is not that these people are stupid or immoral - it is just when those deep, deep, deep unmet needs start to get addressed they are so immensely vulnerable, because to not have had it all your life and to suddenly get it - it is almost impossible to walk away from a situation like that. That is why the professional guides to ethical conduct, policies, procedures and etc exist to protect those who have been through such immense pain, suffering and trauma.
You are all smart people, so get very familiar with the ethical codes of conduct and professional guidelines and principles - so you understand what is really going on in these situations. However, I full understand that for most people - even knowing all this - they can't walk away - so it is a very difficult situation to manage.
I would also suggest learning about transference and countertransference.