Wow, Gwern from gwern.net is implicated in this. No idea he moderates that subreddit. It'll be interesting to see how this all plays out considering Gwern has a few essays on self-experimentation with drugs and discloses they were purchased from Darknet vendors. Despite the articles pertaining to illicit substances the experiments in question were exceedingly academic (like much of Gwern's writings).
I'm not a lawyer but I don't foresee much prison time in Gwern's future. There are bigger fish to fry.