No, the person who made Godfather didn't say they are despicable.Yeah, the person who made Godfather said they're not cinema (wrong) and that they're despicable (wtf).
That's what people are talking about. This isn't about "art", this is about the term "cinema", look up a definition and you'll see why.
As for "art", that's entirely subjective, with your line of thinking video games aren't art either. *shrug*
I feel this sort of shit is just people tryin'a toot their own horn over how sophisticated their tastes are. I own almost every single Masters of Cinema BD release, and can still let the MCU be cinema without tarnshing my little imaginary crown of sophistication.
Why would my line of thinking lead to that? Shadow of the Colossus is art, Call of Duty isn't. Yeah you're right, it's subjective, I don't think I ever said otherwise. It's just that some people, on both sides of the argument, put a lot of weight on what these guys who made some of the best movies of all time have to say about their craft. You seem to disagree with them, and that's ok.
And I feel like people who enjoy the movie equivalent of fast food can't just enjoy said fast food and instead feel insecure about their tastes when someone who isn't into making fast food says he doesn't like it.