For hardware or artificial-scarcity fetishists I guess this is really exciting. For everyone else, I don’t know why anyone would waste donate money for something which we can perfectly emulate on about every platform and architecture you can imagine. These emulators also have the benefit of allowing you to use digital copies of the games instead of increasingly rare and limited cartridges.
I don’t think the “rare and limited” argument holds. There are things like the Everdrive which emulate NES cartridges.
This debate is also held for pretty much anything that’s old and collectable: After restoring an old motorcycle, should you ride it or put it in a display case to look at?
It should be possible to make novel hardware cartridges too, although perhaps more difficult to legally sell them for copyright reasons (but you could imagine selling a generic NES cartridge that reads data from a SD card, leaving it to the end user to be the one to violate Nintendo’s copyright by downloading the NES roms and putting them on the SD card).
Krikzz (https://krikzz.com) has made an industry out of this very idea.