 "Noach was told to take both Tameh and pure animals. This is clearly from the perspective of Kashrus. This demonstrably indicates that at least some aspects of Torah were known before Har Sinai."  Alternately, it demonstrates that the guy who wrote down the Noah story was not only familiar with various flood legends from local mythology, but was also familiar with other aspects of Jewish ritual. That makes a great deal more sense, in light of all the available evidence.  The idea mocked in the video-- that the avos kept all the mitzvoth-- is pretty much ridiculous on its face, and, notwithstanding the author's efforts, I find it difficult to imagine taking it all that seriously. But then, this is about belief, and not reason. As the saying goes, for believers there are no questions, and for unbelievers there are no answers. 