Why dont many girls like prog?

Let's not go down that route, before someone inevitably tries to argue that both prog-listening and cat ownership are inextricably linked to higher intelligence and/or cultural sophistication. Surely dogs and pop music are for the plebeian masses, those that seek immediate gratification, while only the intellectual elite can understand the importance of a ten minute masturbatory keyboard solo or of an animal that stares blankly at the corner for 5 hours before tearing your couch to shreds. These are enriching experiences that the peasantry will never know, bound eternally within their own ignorance and shortsightedness. 

Actually, there's a very large and growing community of women getting recognition in Blues, Punk, Grunge, and Metal as well.

To be honest, I know a lot of women who love prog. It was a group of women who introduced me to Steven Wilson and Porcupine Tree, and just a month ago, I sat down and listened to ELP's album Trilogy, on vinyl, with a group of five other people (not including me)... I was the only man in the group, and the album belonged to one of the other women (though I do own my own copy). We let the music wash over us, occasionally discussing music theory, timing, and so on in context of the songs.

Where I find the disconnect is that, no matter how hard I try, I can't find any women who play Prog.

I listen to so many women guitarists, but they all play Blues, or Folk, or Metal, or Grunge, or Punk... I'm still searching for a woman who takes her cues from David Gilmour, or Steven Wilson, or Steve Howe, or even Jimi Hendrix...

The only women guitarists I listen to who don't really play Blues, Folk, Metal, Punk, or Grunge (and that's debatable) are Ava Mendoza, Anna Calvi, Kaki King, Marnie Stern, and St. Vincent... but they aren't Prog, either. There is one guitarist who plays... not Prog, but experimental guitar... Wata from the Japanese Experimental Noise/Sludge Metal band Boris.

And while I know women who's skills on the piano are beyond amazing, they either play Classical, Pop, Rock, Blues, R&B, or Hip Hop.

Same idea with women I know who are drummers, bassists, etc. I know and/or listen to so many talented musicians who are women, yet the only women I can find in prog are vocalists... and that's it.