It’s a really well done article, thoughtfully written about a difficult subject.
I grew up riding in southern California, and as the article notes, he is a trainer of trainers. That means that a huge percentage of people who rode hunters from say the 60s-90s rode with one of his students (including me). I have the concept of a “grand-trainer” meaning that I find that two professionals who rode with the same trainer have many techniques in common and he is one who definitely leaves a stylistic mark on everyone he taught. His influence is just tremendous in Southern California, more so back in the day.
People like him with similar histories (note description of “Ladies’ Man” ugh) built our sport. Many professional horsemen have only one mentor, who taught them what it meant to be a professional in our sport and in life, and the truth is many of those people were abusive. We need to separate the good things they taught us from these elements that are not good and need to be discarded from the next generation. I think it’s a terrific thing that the training is now even available to equestrians.
It looks like anyone can take the training here: https://www.usef.org/compete/resources-forms/rules-regulations/safe-sport