Does it? I kinda feel like you're approaching the idea of listening to native voices uncritically. Protecting their practices and ability to practice their culture is important, but the idea that their religious beliefs about nonpractitioners should be enforced isn't acceptable, just like it isn't from any other religion.
Certainly we should be protecting peyote, returning the lands it grows on to the tribes/NAC, and stopping others from harvesting it, but there isn't a justification for stopping people from using mescaline that was created sythetically or grown from other cultivated species. The theft and oppression that stops them from practicing their religion is harmful, but just using mescaline derived from other sources doesn't affect them or their ability to practice.