Why do people that play the game only 10 hours write reviews?

User Rating: 9.5 | UFO: Aftermath PC
I still can't understand how one can write a review of a game that he even didn't play long enough to start really play it ?! At the begging it starts slow and not very interesting- yes, thats right, but it gets more and more interesting and challenging with the time. I'm not a "hardcore" player and when I got ,like, to the middle of the game I had to keep loading the game when half of my men got slaughtered by a single alien that had ambushed me with a plasma launcher or a rocket launcher. One particular time, I cant forget it, i have put my men in a formation waiting for the aliens to come trough the portal at a base, when the wall next to my men just blew away! They have heard me and started shooting at the f***ing wall- the result- couple unconscious soldiers and the rest almost dead! The game will be one of my favorites for the rest of my life!