But does the fact that he was grown in a gestation chamber not allow for possible genetic engineering that would remove such drives? And since the world he's from has been enslaved by Mojo for an undefined period of time and is a century in the future, it's possible that sexuality has been engineered out by that point for easier control.
I'm not defending Liefeld for raising a stink about this, but if he had actually wrote 'no sexuality' into Shatterstar's past he would have some right to be upset at his work being erased. But as it is, Shatterstar's worlds sexuality has never been established, so PAD is free to write whatever he wants with the charcters.