I mean, if we wanna complain about it, Manaka, Oboro, and Riannon can have a cripple fight to determine who's the worst of the worst, but at the end of the day, they all have large flaws and they're all generally considered to be at the bottom of the cast. That much being said, you can still win with these characters, but you have to be way more on point than if you were using a stronger character.
There's no real reason to fall into hyperbole either -- it doesn't really help anyone get a firm grasp on the flow of the game by doing so. If you want to help spread information, then explain *why* she has issues and offer advice on it with the intention of maybe opening a discussion.
If you just came to complain about a hard-to-use character and how you can't win with her, ggs.