No, not one of the more sensible things he backs. He clearly gets over excited with "nature" and sadly doesn't have the science background to back this up.

With any institution one can get minions wielding vast power as they are perceived as doing things "on behalf" of the head even if the person at the top isn't aware of it (which of course he might have been). Charles also doesn't directly control who others decide to ostracise. If they are more royal snobs than scientists that's their problem.

Charles views have done a lot less harm than the legions of celebrities undergoing "detox" or droning on about how important hydration is to survive. That must be very bemusing to all those in arid countries. They are clearly so stupid to be unaware of the functions of both the liver and the kidneys.