Makes a ton of sense to me. Dr Sarno was quite aware of the mind body connection and attributed most chronic pain problems to repressed rage. Psychedelics may help with this as effectively as his program.
I know that for some (many?) people the mind-body connection is taboo. They'd rather see the body as a separate machine than recognizing that it's affected by psychological processes. A reason could be that they want to avoid dealing with their trauma's, which is would be something you'd have to do if you want to heal such physical ailments.
I’m really not sure why he’s never caught on more
https://youtu.be/cbF2HMXtfZ4