This list is incredibly stupid. For example, China’s most seri exous problems are not what this list suggests. Besides, even if the current dynasty collapses and the borders change, a Han nation of China will still exist.
That was actually my first thought as well. But then I upgraded the list from "incredibly stupid" to "wildly speculative". And that's because I considered the Soviet Union. In a few short years the Soviet Union went from being a powerful centralized police state to, well, not even existing.