While I share some of your sentiment here (truly), I think 90% is way too high a number for the field as a whole, and also believe you're likely discounting "emotional intelligence" and the boots-on-ground work that non-academic psychology specialists are doing for public health and mental health in general. IOW, I am *equally* skeptical of armchair psychology people who are so dismissive about "real" psychology people.
Everybody has an opinion, and peer reviews etc. are how we root out "intuition" from clinically proven phenomena. EMDR is a great example of a recent-ish innovation that is still being tested clinically on its efficacy, but shows some promising signs thus far AFAICT. I'm certainly glad somebody is testing it etc. so that we can incorporate it into folks' care, and would not consider the people doing so "90% charlatans" nor would I find them exclusively in some alleged 10% of "non-charlatans"