The idea came from this article posted on a different thread by someone else:
http://homepages.3-c.coop/erthworks/power.pdf

"The client’s dependence on the counsellor or therapist is obvious. But the therapist is equally dependent on the client: not only (in private practice) for their money, but also and perhaps even more importantly for their positive feedback. O ering therapy is a very scary and insecure experience, even if we have been doing it so long that we aren’t often conscious of the scariness; and we need our clients to appreciate what we are doing, to value us, like us - even to admire us. Some practitioners instead deal with the anxiety of the therapist’s role by despising and denigrating their unfortunate clients."