Sorry, I should have been more clear. You know the video you linked to, where it shows the American frying/chowing some veggies in a pan? According to the articles I linked to, for much, if not all of the lives of those Okinawan centenarians they often fried those veggies in lard (pork fat). Like most traditional cultures where meat is not overabundant, they also made use of every edible bit of the pig. One of the articles also mentions occasional use of sesame oil, but one also talked about how when those centenarians were young before WWII they were eating more pork than they do now. Remember, their health is a result of their entire lives, not just what they are eating right now. It's hard to tell without more detailed info, but those American scientists in the video appear to be making the mistake of basing their judgement of the Okinawan diet mostly on what they've been eating recently and putting much less focus on pre-WWII. It's too bad the Okinawans weren't studied their entire lives from womb to grave.
I think that the most important time of all in a person's life when it comes to diet is actually when one is developing in a mother's womb. Seems to me a zygote or fetus whose genetic expression is in the process of developing would be much more sensitive to dietary impacts than a mature adult. So a key question is what exactly were the mothers of those centenarians eating while pregnant with them. My guess based on what I've read is that lard was the most common fat in the diet at that time.
Wheat is another foods that is rarely examined when trying to figure out why some Asian diets provide superior results to Western diets. For example, according to some scientists, the raw data in the famous China study actually correlate wheat more strongly with disease than meat. I'd be curious to know how much wheat the Okinawans were consuming in their youth vs. today's Americans.