A Westerner visiting or living in Japan who will only eat "meat and potatoes" and does not enjoy sushi will usually not be successful in learning Japanese.
I had never heard of Steve when this book was published in November 2005. In fact, Steve does not know me. I have only tried a tuna sushi. I liked the soy sauce, but otherwise there was no flavor which I could enjoy or dislike. I don't care for fish. It does not matter whether it is cooked or not. I just don't find it delicious and I have no interest in fish at all. Does that make me a poor language learner?
There are lots of foods I don't eat. Should I just give up on language learning then? I don't drink or smoke. How will I ever be able to socialize with Japanese people?!!
Well, he did say, 'usually.' I guess I will have to be unusual. Anyway, I think I have been unusual my whole life.