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.
By your logic, U.S. government are a bunch of armed thugs who happen to control some territory. 50% of the U.S. population aren't voting. 50% of the remaining 50% decides the next government. Basically 25% of the population impose their will on the rest of the 75% of people. That's tyranny.
In Civil War era, the Southern States had democratically voted to leave the Union. The North ignored the democratic result and went to war to bring them back, killing half of millions in the process.
The Southern States had voted democratically, with super majority, to keep blacks as slaves. By your logic, that's just a-ok.
You don't have the experience or the knowledge to achieve your goals. 4-year college just gives you the basics. You are still too young. 30 is when you have established with enough experience and knowledge, 40 is when you've gained wisdom, and 50 is when you can see global trends in the world.
I don't have evidence Reddit would reduce operating costs since they haven't switched yet, and I don't have access to their code/architecture/etc to decide one way or the other. However, based on my personal experience, static type languages are much faster than dynamic languages and use much less resources. They used substantial less servers to maintain the same SLA throughput. You don't have to take this advice and keep paying for the high cost of hardware. There's a belief that developer cost is much higher than hardware cost and thus it's justified. However, when scaling out, hardware cost is much higher than developer cost. Developer cost is a fixed sunken cost at initial development. Afterward it's just maintenance and can be scaled down, but the hardware operation cost is ongoing, increasing years after years.
Intel doesn't have a good track record in non-hardware (or non-cpu) endeavors. The way they can win in the phone arena is to provide the whole hardware aspect of the phone and leave the software parts to its partners, including Apple.