Doctors are very dismissive of chronic pain patients and regularly make you doubt you have anything, generally with language very similar to Sarno's, in my case I had to fight a lot until they found I had a variation of Parkinson's disease, it was very distressing and a huge part of my unhappiness.

He stated exactly why he was dismissive. You merely reassert the author main point, but fail to address the counter arguments he gave.

Calling a single sceptical statement "counter arguments" is disingenuous at best. The linked bidmc article is a good starting point if you really are interested.

He quoted 3 sentences from the Wikipedia article, in addition to his own. All of which are relevant and valid points.

You didn’t address any of those. Neither did you address his own.

Even if it was only one, reasserting the author thesis, pretending to ask why he is dismissive while ignoring everything he brought is not a constructive contribution. It’s manipulative at best.

I is relatively well established but it is also used by people and physicians to dismiss of sufferers' pain by assuming that psychological aspect are the _sole_ cause of physical symptoms. Blame the sufferers' attitude etc. Quackery at it's very finest.