I don't see why it dismisses itself. It asks questions, it's just philosophy at that point and the good old epistemological questions. But the first and second order thinking it encourages is a perfectly useful framework.
It helps understand situations vastly different from ours, but it doesn't dismiss your own core values.
It's probably a good postmodern conclusion that truly understanding the Chinese way is impossible without actually being completely in it, but at that point you are again too biased. But that doesn't mean that without a full immersion we can't gain valid insights about it. We can. We are perfectly aware of the big picture, we have seen it hundreds of times by now in various countries (and proto-countries) over the last few thousand years.