I don’t blame you for being skeptical, njitt; in your position, I would be too. I did note in my post that much of what you’re saying is true- that ‘photographic’ is a misnomer; that it’s really just far superior recollection with special attention to detail; but then, if I’d taken a test and failed, I’d probably use that to justify claiming abilities I probably didn’t have. I’m not boasting atything so miraculous as the shysters of old claim; it’s doing something anyone can do- just better, and more easily.
It’s notably superior memory. How much? I don’t know. Enough to make a real difference, not so much it acts like a machine. That’s all it means, nearly all it has ever meant. The term wasn’t coined by people rigorously following the scientific method. It was a convenient shorthand to powerfully express a relatively complex idea. What term would you use?