Yes, that too. You can use Rpis pin to transmit FM radio for instance. Which gives me crazy idea: if you transmitted a fake ad "call <number> and say <seed> to win 1M dollars" how many people could hear it and would call?
I mean the power available to do that from inside a hardware wallet is probably not gonna make it far enough for much anyone to do much with it, doubly so if you only have a relatively limited time to get it through before you run out of power.
Yep, this specific idea was just funny thought, not a serious attack.