The wii had a gc emulator so I bet it will (not talking about an official one)
That's false.
The Wii was basically a reskinned Gamecube with Motion controls.
The Wii and the Gamecube had the same kind of hardware/architecture, hence why it was possible to play Gamecube games on it.
As for the OP's post, that's nothing more than a leftover or a placeholder which has been found in other Nintendo consoles, like the 3DS.
This is also a duplicate thread, this was already discussed here:
https://gbatemp.net/threads/surpris...-including-nes-snes-n64-gb-gba-gbc-ds.519141/