Methinks you misunderstand. This is a money-at-all-costs gambit, not a pinnacle-of-science-and-engineering product.
It could have been made by someone following popular HN advice: a.) target women by b.) preying on a weakness (here, a sense of insecurity) then c.) extract money.
it get's repeated ad-nauseum by an individual with little else to offer.
You've been on HN for less than an year. I'm not sure you're ready to start passing judgement on how much one of the most helpful contributors has to offer.
Contains "ass": ui-bg_glass_55_fbfgee_1x400.png
Path contains "x", contains "butt", "up" could indicate up-skirt: combo-button-up.png
Contains "stroke", contains "16": stock-selection-stroke-16.png
Contains "cock", contains "x": xlr_pro_mortal_cocktail.png
Contains "hole": whole.png
So basically anything with an x, a possible age, and any number of flagged words/slang/abbreviations, etc could be causing these to be flagged.