Not like Fallout 3/NV or Skyrim (unmodded) looked particularly impressive.
But in essence it goes like this:
Game has incredible graphics and shallow gameplay = Why are you focusing so much on graphics over gameplay?
Example: The Order 1886
Games' initial trailers look out of this world amazing and it subsequently later on becomes clear that the game won't look like that = Why are you trying to make us believe that the game will look way better than it's going to look?
Example: Watch Dogs, Witcher 3, Division (probably)
Games' initial trailer has realisitc graphics that aren't out of this world amazing = Why does this game look like shit?
Example: Fallout 4
Conclusion: Gamers are idiots.