Rate & Review Button Disappears on Game Pass for PC for games with no reviews

It's that these Halo 4 reviewers might not have been the ones to review the past Halo games, so those old ratings aren't necessarily their opinion. They could have personally rated past games lower than they rate Halo 4, making Halo 4 the best yet for them.
Unless you find a reviewer that has rated Halo 4 and a past Halo game that says Halo 4 is the best, yet rated the other game higher, then there is nothing wrong with a reviewer saying that it's the best, because that single reviewer didn't rate any of the
others higher. Now, if you can find a reviewer that contradicts their own past rating, then there's a problem.

If the reviews are actually about the game that's fine,but I'm not here to talk about the game itself and more so the ratings and reviews section being abused. Leaving a review should be a privilege and not taken lightly. It pains me to see a lot of unrelated reviews and ratings posted on games and apps.

Game ratings from users are done from the games store page. Just scroll down the page to reviews, and if you have played the game, you can give it a rating and a review if you wish. These are the same ratings that are shown on gamepass.

I was thinking about playing this game since it has bad reviews and rating but not for everyone any game is or could be trash and unplayable. There are always some people who will like it and will give good rating or review..

steam does that, after 3 hours of gameplay it lets you leave a review, also you can get thumbs up or down and replies to your reviews too. Microsoft won't go as far as that as it means doing some actual work.