Not exactly 'mildly' by any united states standard... interesting post though.
Heck, the author of TFA has it tagged as nsfw himself! I disagree that the drawings were not meant to titillate. The, ahem , anatomic detail they go into was unnecessary to prove his point.
I'm curious what exactly you mean here? It's a naked body, it's not posed in a "Pornographic" way, and by definition a naked drawing is a drawing of anatomy, and even then it's not as though anything has been gone into in detail. I'm not sure why the artist would have to deliberately remove elements to 'satisfy' the whims of insanely prude readers?
Besides, without the anatomical details, there probably wouldn't be the visual clues to identify the characters as 'Naked', which is necessary for the point in question.