Clearly a design feature from the Schrute Farm Irrigation Room. Would be super easy (and more stable) to use pipe straps and dark-painted or -stained wood with the black pipe to make them into actual shelves.
Ok, so apparently some people don't read in the bathroom. So, playing with a phone you put against your face is more ok? lol. Maybe the hubby would be more ok with something like instead of a bookshelf!