i have to say, i was well impressed by the rigz section, and as you say you can implement anyone's gear to replicate the rigs BUT
most kids coming up today would take it as gospel that the rig just HAS to have the line suggested at the very least to get the same effect so while we are at it we might as well do a proper job with the rig rings, putty and hooks etc too. so for the cost of a couple of grand to set it up it will eventually pull in a hell of a lot more in revenue (or tax write offs)
so yes, big up to DF for the charity work and all the educational stuff (again tax deductible) he is putting in place, but you cannot escape the fact that it is meant to enrich his bank balance in the long run.
i dont mean to belittle Danny one bit, i think the man has one hell of a set of eggs to get as far as he has. and i think he does more for charity than anyone else i could mention. but sorry to sound pessimistic, i doubt he would do it if it actually cost him money
p.s. i have actually learned somethings from the knot section so 'bookmarked'