Unfortunately that still chills legitimate negative reviews.
That is true, but it is a question of degree.
If my legal name is attached to a review, I, personally, will not post ever.
If I know the only way someone can find my legal name is to subpoena some midwestern chain of brick&mortar notaries, I will post sometimes.
Like you, I don't think there is a perfect solution: as a sender, one wants privacy, but as a receiver, one wants transparency. We need some sort of compromise that one can accept for either role.
If my legal name is attached to a review, I, personally, will not post ever.
If I know the only way someone can find my legal name is to subpoena some midwestern chain of brick&mortar notaries, I will post sometimes.
Like you, I don't think there is a perfect solution: as a sender, one wants privacy, but as a receiver, one wants transparency. We need some sort of compromise that one can accept for either role.