@kierkegaard: I disagree with the premise that because someone needs to be saved or avenged, it automatically makes them an object. The problem I have is that instead of trying to empathize with a character and think that they would do anything for the person they love, we are supposed to assume that they are doing it because it's their possession. Just because there isn't a 10 hour prologue showing their relationship before she's kidnapped/killed doesn't mean the woman is an object.
I've been playing Fire Emblem: Awakening, with a female protagonist. Not to give too much of a spoiler, there is a scene with Emmeryn that uses the Damsel in Distress and Heroic Sacrifice tropes, although I'm sure it would be argued that she's a Disposable Woman. If one were to simply see her in a super-cut of tropes without context or knowledge of the game, that might make one think that she has no agency, and I would disagree with that because I know the context. Her depiction is not unethical.
Without any context, I can't really agree that anything nefarious is going on in each clip used in her video since I haven't played them all. And I can't take her word for it because I've seen posts in other forum threads regarding specific games where people point out that this simplified approach misrepresents a game being used as an example, e.g. in one, both male and female characters are trying to save the damsel.
Well, if you build up the complex life of a character for 10 hours, but then lock her in a cage and tell your hero to go save her, you've removed her agency, right? She's imprisoned--she can't make purposeful decisions. Same thing if you kill her--she no longer has agency because she's dead, yo.
You say this protagonist in Fire Emblem has agency. Why? What about her story means that despite the events you described, she is still able to make purposeful choices in her life?
Like Anita said with the Psychonauts example--building up a character with personality and backstory and humor is great, but when you take it away by locking them into a chair in need of rescue, you've just eliminated all that stuff from before. It's that alteration from fully fleshed out person into controlled, locked up, or dead person that is disturbing. That it's a trend almost entirely made up of female victims is where the sexism comes in.