While I know nothing of the Navajo, the moon and the sun are revered by many people. They are literally seen as gods by some religions. I have no trouble believing that they see this as desecration without having to actually delve into their beliefs. But yea, would be interesting to know what it is to them.

There are many obstacles to living on the moon, but I don't think their belief will bar us from burying people there. Like other religions, believers will have to disconnect their god from the physical moon body.