Whatever this **** is, the flaws in your friend's system will become apparent when he turns up to a judo or BJJ class. Untill he's done that he hasn't really "tried to find flaws".
Not to be too cruel, but they suck!
ussd, from what I've experienced they charge way too much, they promote you if you pay, they take a lifetime to show you anything useful.
I was invited to check out a couple schools. Sad to say their students were less than capable. The only ones that could do anything decent were practitioners of 6 or more years. McDojo to say the least!
If camaraderie, culture, and exercise is what you're looking for than that's a great place to spend your $$, but if you're wanting to learn a fully functioning system that will produce results on the street without wasting years on your life, go somewhere else.