I have seen quite a few therapists but I have never felt that. I have felt that therapists know different things and have different approaches, and not all of that knowledge was useful for me and my situation. I have seen a few therapists for only a few sessions as I did not like their approach / style / knowledge or simply didn't think they would work for me. I am very picky about who I do therapy with. But I didn't feel a single one of them took the position that they were "right" and I was "wrong". I didn't perceive that at all.
That seems to have consistently been your experience though. You perceived them that way. That was what you felt in the presence of every single therapist you have seen. I can see how thinking about who is "right" and who is "wrong" would lead you to take a very firm stance against all therapists.