What's being described isn't an example of conditions being set on the content of the review. It's an embargo date on when a review may be released, and a restriction of what may be publicly disclosed before the review is published.

There's nothing wrong about that, and in fact forbidding embargo dates would have a pretty bad outcome. It would result in reviewers getting no early review copies, and having to rush out shoddy reviews ASAP after the release. Likewise the customers would have no access to reviews on the release date, and would either need to wait or buy the game blindly.