I think it's absolutely true that popular movies won't automatically become classics.
I think it's total bs that popular movies can't become classics.
Putting down an entire genre as doomed to oblivion is an even dumber statement, and the 'evidence' provided by this article is really laughable.
No one remembers the old superhero movies from the 70s and 80s, you say? Could that, maybe, just possibly be because most of them weren't actually well made in the first place? Superman I and II were the only ones even worth being called movies at all (and Batman, though that's almost a generation further) - they're also, incidentally, the ones that are remembered by quite a few people.
Christopher Reeve didn't get to own the role forever? Well... who cares? Other people have played Dorothy, too, and done perfectly good jobs. Yet the author doesn't think that harms the Wizard of Oz at all.
And if we're going to talk about how previous popular things have now become 'quaint artifacts from movie history', here's a starting list: Citizen Kane, Gone with the Wind, Apocalypse Now, Dr. Strangelove. And what the hell is City Lights to begin with? I've literally never even heard the name of that so-called classic before.
Also, interesting that Star Wars (which honestly doesn't deserve 'classic' status, either) is noted as the intriguing exception to the rule that mainstream popular movies can't become classic. Because, apparently, Gone with the Wind, the Wizard of Oz and the Godfather weren't popular movies with the mainstream...