I don't care what he says.
As for 'how to beat BJJ'....biting their nuts off usually does the job. Or their fingers, or anything else they bring in proximity. Personally I like biting the carotid artery so I can do a 'full connection' kaiten-nage (ude hineri). You have to elevate the leg instead of the arm though...but what the hell, we all make sacrifices for our arts. At least most of us don't wear or condone lycra..that's the important thing.