I'm not really girly at all, and like a lot of typically masculine things/activities (and dislike a lot of feminine things, like shopping), it doesn't preclude friendship with fairly girly girls. I think when I was younger and superficial differences mattered more, it was a bit of a barrier. Once you (and others) learn to look beyond that and see that at heart, human beings aren't all that different, it matters less. I mean if someone talks constantly about things that irritates or bores the shit out of me, I'm probably not going to be able to be friends with them, but that's got nothing to do with sex.
I think it can be kinda fashionable to bash (so called) feminine behaviour/traits, and some women want to differentiate themselves from the stereotypes by joining in on it. I can see why they do it (I really hate being lumped into those stereotypes too), but it's not the best way of going about it.