I'm putting way to much thought in this, but I am seeing a payphone and no camera, but I'm also seeing an anatomically correct hand and a properly mirrored Champion logo.
But if it was that old, they wouldn't have known that future phones would be able to take pictures. Therefore they wouldn't have made the joke in the first place.
True hadn't thought about that. You're probably right but there was a significant overlap between the release of the iPhone and when people stopped using small digital cameras. Plus mirror selfies with flip phones was a thing.