This is art, so arguing about exact boundaries is pointless in my book. But can we at least agree that there is rather a big difference between "This is something that plays from a standard cartridge with a standard mapper on the Famicom/NES you have from your childhood" and "This is something that plays from a standard cartridge with a standard mapper on the Famicom/NES you have from your childhood with a modified superhuman-speed controller to in real time feed 16 times the amount of data of the largest cartridge ever released for the system"?

It really is impressive, but it is also fair to point out that it uses the MXM-1 mapper which only came into existence in 2022 [1]. I find it pointless to argue whether it is "cheating" or not as the technology it uses was used for other consoles at the time and it is fun to see new mappers like this, but it is, again, very different compared to keeping it within the realm of original Famicom/NES mappers and limits.

[1]: https://somethingnerdy.com/unlocking-the-nes-for-former-dawn