I would submit that there's a difference between the relative masculine or effeminate personality trait and their sexual preference. There's plenty of heterosexuals that are more effeminate and homosexuals that are more masculine to show that, for either sex. The curious thing to me however is that of the gays I've known over the years they do, almost without exception, always pair up in relationships with their role opposite. That's to say... Two gay men will pair up with one in a masculine role and one more effeminate, and lesbians will likely pair up with each taking a gender role. It's inescapable.
The curious part is why... For example... A lesbian woman claims not to be naturally attracted to men but is attracted to a masculine woman. Seems its not about gender or psychology at all... But merely about the equipment. They're happy to have sex with a masculine-acting woman with strap-on equipment... But not with a man. That's not gay... That's just a man hater.
I think that you are on to something.