There was, to put it mildly, a big brouhaha when this paper was published.

I think it might be nice as a guideline, but I don’t think it’s necessary to make it mandatory. I just thought it’d be funny to highlight the scholarly bathroom germ debate.

Teach the controversy via whiteboard marker on the bathroom mirrors!

Wilcox et al were working in a hospital setting and just found that the air bacterial counts were higher around hand dryers than around paper towel dispensers, which doesn’t establish whether the hand dryers are actually a source of bacteria. A more recent meta-analysis found mixed outcomes. So both the sign and the graffito need to revise and resubmit, ideally with a more comprehensive survey of the published literature.

Given that Psilocybe mushrooms are coprophiles (typically found growing in manure or pastures where manure is abundant), it’s unlikely that they mind being eaten.

As someone who’s had a paper sitting with a journal since August I can understand the motivation.