What is male rebirth kamma?

Even though the Pali Suttas appear devoid of the idea masculinity & femininity are results of past kamma, such ideas appear to remain fertile in worldly Buddhism. I read the following on the internet: > I think this is pretty obvious. Karma functions as a universal law and > our situation, the form we are born in is decided by karma. One of the > sexes is naturally more advantageous than the other, despite women > having an easier time in modern society, even just anatomically they > are less fortunate. **Then of course like the Buddha explained, women > are unable to shake their desire for sex, reproduction** and no Buddha > will be born in the form of a woman. Indicated males are more > advantageous. Also hence why there are more vinaya rules for women If the above is true and if desire for sex and reproduction is the cause of rebirth as a woman, what is the cause of rebirth as a man (including as men with multiple wives, as mentioned in SN 55.7)?