They are discussing what they know about the game so far which is all anyone who hasn't played it yet can do. Someone is more than entitled to speak their thoughts on what they are seeing. It's a message board.
No one would come after this guy if he said how great the game looked. "You haven't played it yet man, stop talking about how good this game is".
The gameplay I'm sure is better and will feel different. But the commentary overall, though it may have improved incrementally, does need an overhaul. I think the PS4 is the logical time for such an overhaul to happen and I'm excited for it.