I'm going to preface this:
Though a beginner in BJJ, I've done other arts before and one thing I've realized is that most arts have within them several different ways of accomplishing similar or the same things, and different experts will achieve high skill in each of the methods, but may not necessarily realize that there are in fact other methods, and so judge individual things they see within the context of their own expertise and method, and deem them not as good, or just bizarre. Every method has advantages and disadvantages, and whole-systems develop to maximize advantages and minimize disadvantages. If you don't have the whole system, you miss this very important context.
So, when some people see Saulo's clips and don't think it works, I think they're seeing it in isolation and within the context of their own approach, not as part of a whole-system approach Saulo is using. By the same token, when Saulo says other ways don't work, he's seeing them in the context of his own approach, not the whole-systems of the people expert in those approaches.
Okay, enough BS. On with the review: