That makes absolutely no sense.Any outside device that isn't built into the game code I'm against. If there were an exploit to summon amiibo without actually scanning amiibo I'd be all for it.
You know Amiibos don't contain code, right? All the code is in the game, all it's checking for is the Amiibo's presence. And again, the devs added that functionality into the game intentionally, so I say it's fair game.