Sure. It’s just that the user doesn’t install Unity (or any other engine) themselves when installing a game. They install the game and “it just works”.

For a mod, you have to either have the game, or go get it before you can play a mod.

I know what a game engine is. A court clerk or judge most likely - doesn’t.

And it’s in Nintendo’s interests to paint mods as something lesser - that’s why they take this strawman angle to mods. They couldn’t care less about “games” or “mods”. They care about protecting their IP with any groin punches and baby mario noises they can get their divorced-from-reality hands on.