To be quite honest, none of this shit or debating affects anything in real life but...
to be muscular and healthy, you don't need a plan - you just need to do whatever the fuck you need to in a gym and get active. physical activities & increasing amounts of weight overload of a period of time are basically what Johnny does. it works, it's fine.
As much as you want to think The Coach sells snake oil - he doesn't. He sells a service (coaching athletes on a month to month basis) at a premium inflated price. He isn't doing squats on bosu balls but he ain't working with the best equipment he can get either.
Those kids and their parents have a lot riding on the training, which is probably why it's so expensive. I can imagine that his training would work towards being the best in a given activity - would I pay for it? no - I don't see the value in the service....
I do see value in the methodology and using it for my own means. Rugby player NEEDS to train different to a marathon runner. End of story.