Since I came back to D&D in 2001 and got back to a system in which characters had charisma attributes, I haven't noticed this as a pattern at all.
I currently run two campaigns; in my Kazuria campaign, 3 of the 7 characters are charisma-based: 1 paladin, 1 sorceror, 1 bard. The bard is female, the paladin and sorceror are both male; in my Fimblewinter campaign, three of the characters are charisma-based: 2 bards and 1 shaman. Maybe, as in so many other ways, my group is atypical. Now that I muse over the list of characters, I find it peculiar that only one of the players with a charisma-based character is a straight male. I wonder what to make of that...
Anyway, I can sort of see your point. Supposing I was an immature teenaged boy who didn't understand that an RPG is a totally inappropriate place to explore anything sexual or romantic, and decided to roleplay getting all the sex I wasn't having in real life, I'd probably generate a bard.