I couldn't open that link for some reason. He's the guy on Super Fetch, isn't he. Well, I have watched a few of his shows...at least as long as I could. LOL. He's cute in a certain boyish way, cheerful and has a nice attitude.
However, as a trainer, he's very imprecise. His timing is really bad. He frequently leaves big gaps, not only with his timing, but with certain steps in method, which could greatly speed up learning and make it more clear to the dog. He does all right in some instances and has a few innovative ideas, but as I watch, I say to myself things like, "Well, if he would just break that down into a few more steps and reward for smaller successes...." Or, "If he would use a clicker for that, he could shape it up much better and faster."
My opinion is that he's a mediocre trainer...on par with a lot of JQ dog owners with no real training in training...lol....who just invent ways to teach things....kind of by the seat of their pants. Sometimes it works, sometimes it doesn't or it works sort of, or partially....just not very effective.