I must like to stir things up. Below is Alan Aragon's rebuttle to Lustig's talk. Should make interesting conversation.
"On the contrary, bananas, grapefruits, Mandarin oranges, apples, grapes, watermelons, pears, persimmons, peaches, and strawberries are significant staples of the Japanese diet . "
I find that hard to believe. I spent 3 months in Japan back in 2008-2009, spending weeks on farms near Tokyo, Kamakura, Matsumoto, and Kyoto.
Fruit is hella expensive in Japan and none of the families I stayed with ate any, except persimmons during persimmon season, apples during apple season, and dried persimmons over the winter -- roughly 1 piece of fruit per day. I wouldn't call that a "significant staple".
I'm talking 2000 yen for a single melon (over $20).