I've generally believed that reviews ultimately serve a primary and, optionally, a secondary purpose: to critique the "quality" of the game (its merits and demerits), and then to offer a (possibly nuanced) play/don't play recommendation.
A review can criticize a game and still wind up recommending it to at least some gamers, if the game does have some merit (above 5 on the NWR scale). That's perfectly fine. What ISN'T fine is for reviews to merely provide a recommendation without critiquing the game, or even worse, fail to critique the game and slap on a score. It's fine to say "If you liked X and Y, check out game Z", as long as it's preceded with discussion of the game that would allow those unfamiliar with X and Y to come to their own conclusions about the game and (ideally) whether or not their tastes are aligned with the reviewer's.