He has refused to come debate a scientist and markets a "secret" method for fixing eyes.
In short, I am all for natural eyesight fixes, but this guy is a fraud.
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All of that is irrelevant to the point that the scientific knowledge is public, cited and requires no payment. If you are someone motivated to improve your vision, you get to decide whether you will believe what you can see with your own eyes. You can also find a vision therapist via covd.org, which can easily cost a few thousand dollars in the US.
Edit: Your reply is as deep as the nesting goes, so I am just replying here. I will look into your link, but you really have done nothing to substantiate your claims.
Here is a different site which independently reached similar conclusions: https://gettingstronger.org/2016/03/faq-for-vision-improveme...
Edit: you are essentially asking for an explanation of behavioral opthalmology in an Internet comment. Any COVD professional will happily answer your questions for a fee. The Endmyopia site tries to communicate some of those principle in layman language, and it has required dozens or hundreds of blog posts and answers to reader questions. The link above provides a condensed explanation.
If wearing glasses works for someone, they are unlikely to seek out alternatives. The people who seek alternatives are motivated because glasses are not meeting their use cases, e.g. myopia has steadily worsened. That motivation then justifies their effort to learn the principles used by vision therapists, or the budget to pay a vision therapist for structured vision therapy that lasts months to years.