Chopsticks Mystery

My wife has just returned from South Korea where she was on business trip. Among many surprising things she encountered was the discovery that Koreans use steel chopsticks. This made me think. Hey, but in Moscow even most expensive sushi bars chopsticks are always wooden and disposable. That’s curious. I’m sure that patrons of sushi bars who take this for granted would be morbidly offended if at some French restaurant in Moscow they were offered plastic knives and forks.
One of the explanations I heard was that sushi bars were introduced in Russia by Americans not Japanese. And Americans don’t really care about restaurant “niceties” like porcelain plates, crystal glasses or starched table-cloths. Even Starbucks that positions itself as a high class coffee house serves 5-dollar venti brave cappuccinos in plastic cups. Is this explanation close to reality?
Related Tags: Russia, Moscow, chopsticks, sushi bar