That's hilarious that you give the villagers thought and the first thing they want to do is overthrow Tom Nook. If this works in Gamecube on an emulator, surely it'd be possible to make it work on the Switch emulators as well?
Would require decompilation of the Animal Crossing game code for the Switch. I believe DRM has gotten a lot better since the Gamecube days as well. Hypothetically possible maybe but good luck haha
Switch DRM, running custom code and interacting with RAM is a solved problem on the Switch (1). There are some really impressive mods, like a multiplayer implementation for Super Mario Odyssey