I'm liking that track!
Sadly, it's all too true about what many female musicians have to put up with. The more neanderthal element of the music fan base seem to view women in rock bands as a bit of a gimmick.
Here there are quite a few heavy bands with one or two ladies in, but not that many that are all female. However, the heavy rock/hardcore/power metal scene in Japan seems to produce more all-female bands than I would have expected, and mostly with some serious chops in the back pocket. I'm not sure why this is... a respect thing, maybe? Is it that women don't get the crap they do over here? Is it a product of a country where more kids have access to a musical education early on? A mate of mine's sister-in-law worked in Japan and said that proportionately more kids have music lessons from an early age over there, but I've never been so I can't comment.