Soviet Heavy said:
TLDR: Games should be classified as art, but not all games need to apply to this form of thinking.
I'm going to say 'Wrong!'. This type of thinking should be applied to just about everything you do*.
To appreciate whether something is art or not requires you to consider it's function, meaning and the choices in it's design. You need to come to an understanding of the piece, the culture for which it is intended and that in which it was created. In short, you must consider something beyond it's face value.
You can apply that sort of thinking to everything from crappy 30 second commercials and the news broadcast through to weirdo arthouse films. From Garfield comic strips and matchstick man scribbles through to one of Turners creations. I could keep going but the fact is you can and should apply that style of thinking most of the time it's how we develop our understanding of the world around us and improve our literacy.
Arguing that all games are art or are incapable of being art is pointless as the label 'art' is appended on a personal basis after that thought process has been run; however your argument is a far worse thing.
You state that we shouldn't even be thinking about some games in complex terms at all. How do you decide which to think about? if you take everything at face value or purely in entertainment value then none of it is art.
How do we appreciate the structural elegance in the mechanics of a simple arcade game without thinking about it properly? How do we appreciate Planescape torment unless we take the time to fully consider the ramifications or it's dialogue?
Not all paintings are art, nor all filmography, not even all writing and all music and certainly not all games but
every single one of those needs to be examined and considered to have it's artistic value determined.
*I say just about as thinking like that can be tiresome sometimes and some things, that are very enjoyable, don't stand up to that kind of scrutiny. Some-days you just want to take your brain out, put your feet up and watch an action movie.
TLDR: stop being lazy and get back to the top (or skip the whole post).