Evolutionary Games I know that I can leave a comment, but that's not really the same thing.
While I understand about your point of view, you can't even expect to have everyone building a system as the Steam's one or have players happy to be tracked. As it happens in all other fields, not only related to games, yes, there might be some fake reviews (in good or bad way), but when you have a few reviews on your game, player will still think that some could be not honest. However if you have 100+ review then the occasional fake one are anyway not counting much.
If you have one fake review from a friend that say, the music is so cool and all the 99 other reviews says that the music is horrible, which one are you going to trust? Same thing in the other way around. So on the medium/long term I think overall reviews will be quite ok.
I agree with bmcarbaugh, the system is there, so why don't just publish it.
Then if the owner of the game is worried about troll, he can still hide the reviews.
When you have the review system as an option, then it will be all to the developer to decide if set them public or not.
I don't see the issue.