Games like Last Guardian are pushing the medium as an art form yet "gamers" are grumpy and mad

[palou]

Gameplay is also part of the art that makes a videogame; the only property unique to the medium. If it is lackluster, critisizme must be given.

And why should people with little experience in videogames have a more valuable opinion on videogames? That's like saying that musicians have poor taste in music.