Not sexuality, sexism. At best, Kojima's female characters come off as being written by a child (EVA's seduction techniques being basically "Get a load'a these, big boy"), at worst they make you wonder whether he legitimately has a problem with women (murder the naked Beauties as they try to molest you in skin-tight suits while the camera gives them gynecological exams). The Boss is basically the only woman who makes it out of the saga with any dignity intact, or isn't killed off/raped to manufacture some drama, and even she had to zip her suit all the way open for a sweet cleavage shot at the end.
I'm enormously excited for MGSV, but I've got zero faith that Kojima can dig himself out of the Quiet hole he's made for himself. Pretty sure I'm going to feel just fine about my words and deeds, but, hey, maybe he'll surprise me.