I'm fine with ambiguous rules. A non-profit is not a legislative body, though to be fair even actual laws are usually ambiguous and contradictory and that's why we have lawyers and judges and such.

Ambiguous rules with clear objectives is what gives a non-profit the power to be flexible in the way to accomplish common goals. It's based on human trust and is fine by me and others. If you ever were part of a non-profit, you know human trust is an essential component.