Sure, in theory. In practice they would have let you go for performance reasons, which are only supported by this game being pulled from the store.
Of course you can fight it, but while you do you still have to pay your bills and pay a lawyer, all with no income and no guarantee that it will ever make a difference, let alone when it would be resolved.
EDIT: And all that presumed that the whistleblower protections would actually apply in this case. If it were something clearly illegal you’d have a better case, but really here all you’ve got is possibly fraud and a pretty mild version at that. Proving fraud is tough...
That's basically all of the game industry - from testers to PR to HR to art.
When I onboarded at a global AAA game dev place in Japan, I got a separate sheet detailing my rights as a whistleblower - it's lucky to have these, but I doubt anyone would risk their standing/future in the industry because of something like this, especially during a pandemic.
Even in places where that is true, that typically only applies to employees "blowing the whistle" on illegal behavior, like violations of labor codes or hazardous conditions. It's not a blanket immunity for anyone with something negative to say about their employer.
I'm not sure if this is being sarcastic or not. Doesn't America have some of the weakest employee protection in the developed world (because, ironically, freedom)?