Healthier is pretty hand-wavy. It's got pretty much no protein, which makes it not a great meal substitute for some people. That said, it was tastier than I'd have expected. Butter tea is a similar drink that's also surprisingly tasty, but easier to augment with spices if you don't like the base flavor.

Also... that guy came to speak at the company I work at, and uttered an incredible variety of nonsense. (Mentioned in passing that kale causes autism, said that you have to buy his special coffee beans because the headache you get after the coffee wears off is not caffeine withdrawal but mold poisoning and his beans are the only non-moldy ones on the market.) Kind of put me off the whole concept.