A zen master is alone in his mountain retreat wherever he stands. A life spent seeking further material enrichment or inner personal development will inevitably build a mansion of a self, requiring increasing maintenance and becoming even more difficult to live outside of, let alone deconstruct.

It is much easier to accomplish a universal perspective when you have much less 'self' to suppress. That's been the nature of monks of all variety for all of human history. I don't think it's a coincidence or disadvantage that cannabis enthusiasts have a less-selfish mentality.