Comment by TuringTourist

I suspect this might be because diet marketing before AI was one of the most fraught with misinformation subjects you could run across. This is because the "sale" of the idea has an effect on every salesman, so all of the salesmen are trying to sell every thing at once,since that's also selling their thing, and ground truth gets stampeded. Now when you combine diet marketing and AI, you get a multiplier. Both in the sellers and the buyers, since the desire to believe is stacked.