I don't know... The "Star Whores" nickname's not widely known outside of the geekiest circles of collectors. Not that Hasbro doesn't know the nickname, that's anyone's guess, but it's really one of those out there things, so I see JesseVader's point that it likely was a non-issue to the debate.
They made Ay Vida afterall, who is physically more racey than the twins were with their goofy hair-dos and all that... Ay actually has what appears to be a little butt-floss going on even, yikes!
I tend to agree then that a nickname given by people on-set to the two characters from a '77 film, and rarely spoken of outside the most anal of circles since then, ever really was a REASON they'd not make the figures. Who knows though, anything is possible, it just strikes me as more unlikely as well.