For me, it does. I vastly prefer watching straight women on screen. I think, more often than not, they have great sexual tension with male co star. In that sense I don't see women I like as mere people with vaginas - It's really about the feminine energy and how it contrasts with masculine energy. The stronger the better. I sometimes watch bi women because some of them are very attractive but something always nags me about them and I feel a bit dirty and kinda unsatisfied. I stopped watching more than a few girls before discovering they were not straight. But that could be purely coincidental. Is there a concrete way we can ascertain femininity? Well yes. Among other things there is something called Anogenital distance which should be longer for males and shorter for females.

Anyway, feel free to tell your preferred sexual orientation in women and your philosophy behind it.