But what really comes to mind when I saw this was not so much of how accurate the directions were but what is the chance that the directions actually guide you into making something dangerous. What comes to mind was a 4chan post I saw many years ago that was portrayed as "make crystals at home" kind of thing. It described seemingly genuine directions and the ingredients needed to be added then the final direction was to then take a straw and start blowing bubbles into the dish of chemicals for a couple minutes. What was really happening was the directions actually instructed you to add a couple chemicals that would react and make something like mustard gas and the straw and blowing bubbles was to get you close and breathing in the gas. So I would love to hear from a chemist how accurate the recipe given really was.