I don't think people complain more about therapy than is warranted. I believe people just don't go back or quit after the first couple of appointments because they find it useless. I think a lot more people find it useless than find it useful, but you mostly hear about how wonderful it is from the people selling it.
For example:
"In a study that talked about the therapeutic relationship and psychotherapy outcome, it shows that 20 to 57 percent of people in therapy do not return after the initial session (Lambert). Another 37 to 45 percent only attend therapy a total of two times (Schwartz)."
https://www.goodtherapy.org/blog/why...turely-0627137