There's nothing wrong with listening to opinions of those who have played the game and forming your own opinions based on them. Obviously, the extremes of outright dismissing a game or claiming it will be the best thing ever, before even playing it, are both ridiculous. But simply listening to people who have played a game (not official reviews) can give you a pretty good idea about what the gameplay is like, and every individual of course already has an idea of the type of games they like to play. So there's nothing wrong with starting to form an opinion. I have read and listened to some individual reviews of the game, and so far what I've heard has not made me very enthusiastic.

If people refused to give it a try, then I'd be critical. But just for saying they don't like some of the changes? Big deal. That doesn't mean they won't "give it a chance."