"[N]aked women are never a dime a dozen for any purpose"
, indeed. No argument there, unless you're visiting a Turkish whorehouse, where, undoubtedly, you could LITERALLY get a dozen women for ten cents (U.S. currency). However, that assertion, as well as yours concerning Mr. Pline's alleged "sexist" comment, are based on a LITERAL examination of his comment. To that, I offer "Duh."
Is it not enough that Mr. Pline explained that it was a colloquial phrase meaning "plentiful"? Is it not enough that Mr. Pline explained that as a photographer, he has/had no trouble finding women to disrobe for money? If his portfolio's bulk of photographs were MALE models, would it then be appropriate for him to make a comment about how they were "a dime a dozen"? Or would you STILL be on the ready to attack him as an enemy to the neo-masculine movement? "Female nudes are a dime a dozen". Accurate? Probably. Sexist? Hardly.
"Enough of this parsing," you say. Yes, I'm sure the parsing will end as soon as you get the last word.