I… honestly don't know what else to say.
A significant portion of shows and books out there do not portray women as people but as plot devices to guide a male protagonist's adventures/ growth. To an extent, having characters like these is unavoidable, as things need to happen to make things interesting (most of the time, at least, as some fictions are really good without having much happening at all). It's not just women who get to act as plot devices either, of course. However it's often the case, because a male protagonist acting out of love for someone is something that speaks to a wide audience. And it can be fine, really - when the women in question are portrayed beyond their sentimental value to the protagonist. Because if they're not, then they're not actually important as a person - they're items, excuses for the hero to do something. And, that's not a positive portrayal of women.
Feminists would like it better if in more shows, women were depicted as actual humans, useful humans. Take Hercules, the 2014 movie. I've only seen the trailer for it, mind you, but what does it show you? Hercules' family, his wife and children, are just here to be taken away from him, to make him sad and angry - so they're essentially a plot device, an excuse to get stuff started. The muscle-bound gruff guy gets mad because his beautiful sexy wife gets killed. There's also a woman playing one of Hercules' fellow warriors in the movie, though - and whaddayaknow, she's wearing
a skirt, and boob plate armour that bares her midriff, despite the men mostly sporting sensible armour in the trailers. That's another issue there, needing to make the women as sexy as possible by making them show as much skin as you can, even if it goes against common sense.