How does the glossiness on the iMac compare to something almost everyone has some version of somewhere in their house — a TCL/Vizio/etc 4K TV? I was trying to take a picture of one today to put up for sale, and there was no angle from which I wasn't also taking a photo of myself. Conversely, when I turn off my ASUS 25" 1440p monitor — which was $315 when I bought it five years ago, I see black. Just black. And as five-year-old 1440p monitors go, it's as sharp as a tack.
A cheap TV that acts like a mirror is one thing; a $3500+ professional tool is another. My frustration is that Apple has to take something as reasonably simple as a non-glossy screen and turn it into an exercise in extreme preciousness, expense, and fragility — especially the latter. I'll be afraid to touch it; I'll be wearing masks indoors now lest I sneeze on it, and will generally feel like I have Leonardo da Vinci's Codex on loan.
So I guess I'd really like to hear from someone who owns one, has accidentally bespoiled it somehow (e.g., you actually somehow touched it, its dust-reality-distortion field failed, etc), and then went through the cleaning process: How did it go, and how many Xanax did you need to take before, during, and after?