I’ve been controlling rsi with upper body mobility and strength training + typing breaks for years. This mind over matter approach sounds like bullshit.
That's pretty dismissive for what seemed to be a thoughtful article. Do you think the person who wrote it somehow imagined the decrease in pain? Just because you sorted your out in that way doesn't mean other people can't manage it in different ways - as the doctor said, they don't really know what it is, so it could have a whole cluster of different causes that respond to different kinds of treatment.