I don't get the 'it isn't my place to say' thing. Why not, you live in society like the rest of us. We can consider it for ourselves, assuming it means anything to us.
My interpretation of the Night Marchers is that it represents a brutally rigid caste system, but also a system that has qualities which our modern life may be lacking, namely sustainability and perhaps meaning. The idea of a rigid caste system is appalling to me, and yet for all I know it may be the only way people can live sustainably, at least until we've developed further, if we have time to develop further. Also I'm sure that a religious system of meaning can bind a community in shared values and purpose. I can see value in it despite it being so alien. I can see how others may value it, just as it is, being part of their life.
It's not good enough for Washburn though, who rewrites traditional beliefs and inserts his modern egalitarian values to accommodate a haole audience. If no one cares it only means that no one finds the traditional beliefs meaningful. God is dead, as it were.