What's so wrong about them implementing a belt style ranking system? As a previous poster said, Judo did it first. Therefore, anything after that could be considered as ripping it off. Why don't BJJ guys go by color of the gi instead? 10PJJ does shirts, there are shorts of the various colors out there to signify ranking. I have an answer - because it doesn't matter.
Nobody wigs out when karate has BBs, so let the catch guys have it too. Randy has been doing various forms of submission wrestling for quite some time, and has used submissions to finish fights in the cage. Just like most reasonable people would say that Matt Hughes is a BB level in no-gi, Randy Couture is as well, its good that there's some recognition in his system for that.