The only reason you know the Gracies exist is because of the marketing of the UFC and how it caught on. In the 1950s and 60s and 70s the highest level newaza masters were still in Japan. None of what you said means anything to the point that is trying to be made. The Gracies are very important to martial arts history, but so are alot of other people, and since history can be studied, we should do that. The development of BJJ was not just Maeda, Carlos, Helio. I think that should be the point. The flight comparison is kinda ridiculous, considering there were high level Judoka in Japan like Kimura who was far superior to Helio on the ground. There were several others in Japan. They had put it together pretty well.