That is pretty cool they are an awesome blog I can see why you are excited! I think its a big problem when even people like you who know dang well they are useless and can even be harmful are tempted to try it. A big problem with society not anyone personally. I say be radical and say F 'em! I also found another one of my favorite science based beauty blogs from the beauty brains its called The Brightest Bulb in the Box. Now I just found yours so it is pretty exciting I usually don't like 'normal' beauty blogs I feel they are almost a kind of marketing and have no real critical thinking gone into it. Of course there are exceptions and pretty makeup looks but for the most part... it seems they cant really say much bad about the product.
I feel these just promote disordered eating. I would even say you should not recommend them even for a special event! Losing and then gaining weight rapidly is really bad for you which I learned from size positive activism, it puts stress on your whole system not to mention it causes stretch marks! I loved this article was linked to it from the Beauty Brains facebook page!