I'm not Google, and I agree that obviously they made the wrong call here. I'm just showing that there is a distinction between a review and an attempt at manipluating the score, even if proving it requires insight into the heart of the reviewer. Google doesn't have that insight, but they are pretending they can guess.

As I suggested in a sibling post, a two-star review should be immune to this accusation, so if I were you I'd use a strategy of "two stars is the new one star".