I honestly think your last two paragraphs nail it. From my experience he's quite clear about the marginal benefits from supplementation, and as long as he doesn

I honestly think your last two paragraphs nail it. From my experience he's quite clear about the marginal benefits from supplementation, and as long as he doesn't cross that line I'm perfectly happy to have him serving as a sort of one man literature review. I also get the impression that his audience is a fairly affluent one, so I don't even have an issue with the price level of the supplements he's advertising. So far they seem legitimate (again, even if they're wildly expensive for any associated benefits) so as long as they don't cross into snake oil territory, I see zero issue with any of it.