I enjoy the books, yeah, I'm not going to stop reading, and there's nothing wrong with having a guy protagonist who likes and notices women. But the double standard is in them, not to a HUGE extent, but it's there, as in many places, and maybe if I point it out I'll mentally be labelled a crazy feminist, or brushed off, but I sort of hope it just means other people will notice it more, and maybe decide it's not ok. And when they're writing something, or commenting on something, or whatever else, they'll do their little bit to make the double standard go away.
Serbii, I agree with you that double standards are a bad thing. But, so far, you are ignoring a point that at least two of us have made obliquely-
We
do not know if any of the "lady vamps" are actually bisexual or lesbian.
As has been noted by two of us-
Dresden is a guy. The "lady vamps" want to get their hooks into him. (Food, manipulation, whatever.) They are playing to a trope that they believe works for most men.
We haven't seen a viewpoint from a female figure dealing with this. My personal bet is that most of the predators would arrange for a gender-reversed ploy if there were ladies present. (Example - Murphy met Maeve in Summer Knight instead of Billy the Werewolf there would have been male eye-candy for Murphy.)
There has been at least one incident with a female police officer when Dresden was sneaking into Thomas's apartment. While it was not played up as much (and I don't have the book in front of me right now) it did get her attention at least slightly.
Anyway, food for thought.