Because self-interested collectors have successfully convinced gullible folks that the new production models are worthless replicas which will never appreciate in value and will only get you laughed at when you take them to the range because that tiny little QR Code on the frame completely ruins the aesthetics.
Basically, the same nonsense that happens with any newer production run, in which some minor aesthetic change completely ruins the gun's appearance, magically makes it less fun to shoot, and will only be met by disapproval of one's peers. It works especially well among sheep who care more about what other people think, despite the fact that logically speaking, it's an obvious ploy by those who own something valuable and don't want it's value to be diminished by an otherwise faithful reproduction. "Uh, my vintage model is objectively better because of minor aesthetic differences and people will think your a fool if you buy it. Fortunately, I like your face, so I'm prepared to offer you my superior vintage model for only a few grand more than that cheesy reproduction."