The whole point of reviews is to inform others on your experience. If you’re uncomfortable with others knowing you’ve been somewhere, why are you giving reviews in the first place?
I think tying a review to your google account is also good, because anonymity on the internet is generally used by people to say things they wouldn't say in the real world, often in harmful ways.
You're not wrong, but this is also the argument politicians use to strip you of your privacy on behalf of corporations