I suspect even most hardcore retrocomputer hobbyists care most about emulating the parts of a display that actually came up in use of the machine. If I were an eccentric billionaire who wanted a replica of the Mona Lisa to hang on my wall and enjoy regularly without the inconvenience of weekly flights to France, I'd care much more about my money going into making a product that got the visible details of the canvas right (https://hyper-resolution.org/view.html?pointer=0.055,0.021&i...) than spoofed the proper results if I carbon-dated it or something. I think the same concept applies here. I don't really care as much if the only thing an emulator can't replicate is a clever but (to an observer) comically specific physics-based test for authenticity if I get everything I'd notice while using the computer correct at a fraction of the price. In the context of preservation, just knowing some other (far richer than me) person or org keeping a single-digit number of the actual artifact maintained for future reference is good enough for me.