Because Steven Moffat isn't just trying to ruin Doctor Who, he's also a raging, misogynistic pig as well. Or is he? Well, no, if you really pay attention to what's actually happening. How Doctor Who can be seen as sexist when it heralds such strong female characters as River Song and Clara Oswald is anyone's guess, but the persistent anti-feminist accusations usually boil down to the fact that all of the Moff's female characters are "exactly the same". One viewer has suggested: "Moffat writes women in a way that ties them very closely to the men around them: they dont, or cant, exist without a male presence in place to guide them." But River Song, to use her as an example, can't exist without him. Not in the sense that she would die if she wasn't with him, of course, but in the relative narrative sense that she was conceived aboard the TARDIS and conditioned to kill him as a psychopathic killing machine, who subsequently fell in love with him, so even she would admit that her life has somewhat been defined by him. As for Clara Oswald, perhaps suggesting that she "was born to save the Doctor" was taking things a little too far, but she has since established herself as a strong and independent woman throughout Series 8, and she even took pride of place in the opening titles at one point, so her presence alongside the Doctor has been anything but demeaned. He demeans her, of course, but he also just so happens to be an alien from outer space and she always brings him up on it when he oversteps the mark. Which is quite often. Did we mention... alien?