Its pretty tragic if they removed him from Adsense for that reason. He writes an article that concludes that there is no evidence that Acai leads to weight loss and then Google chooses to serve the snake oil ads and dings him for it.
Just as an FYI, the seedier side of Internet marketing is very well acquainted with the notion of selling a scam by calling it a scam. Pretend, for example, that you understand your business model is stealing from unsavvy customers. You know it is vastly easier to attract links to "Scam is a scam" than "Non-existed research suggests that scam might have some merits!", and hence to rank for the first article.
But do people read on the Internet? Suffice it to say that is not a universal habit! So, if you can rank for [acai berry] or even [acai berry scam] with an article that the average 10th grader can tell you concludes "Yeah, probably a scam", you can still get clicks and conversions to the acai berry offers on the same page, presumably from people who didn't or couldn't read and comprehend the page content.