You are wrong, on both individual level and stereotyping to a nation of people.

On the individual level, he did do the debugging and analysis, on a smaller scope. Linus was asking a bigger scope analysis and a lot of work. Some people are willing to spend time to understand and fix problem for free. Some people have better things to do and aren't willing to spend the time to do it. That's their prerogative.

On a nation level, there are Chinese who want to get things done and there are Chinese who want to understand the root causes, just as there are people in other nations/cultures who want to get things done and there are people who want to understand the root causes.