It's not, but good luck talking to a human at Youtube when the video gets taken down.
> Again, that doesn't sound like a valid suit. Surely she would win?
Assuming she could afford the lawyer, and that she lives through the stress and occasional mistreatment by the authority, yes, probably. Both are big ifs, though.
To add to that, there is provisions to lock her out of pushing new videos to the platform if the number of unresolved copyright claims passes some low number (3?).
So she loses new revenue until her claims prevail, and of course the entity which the claim is made for knows that and has no incentive to help her (don't they even get the monetization from her videos in the meantime ?)