No. They are just a pair of cheap headphones that are usually in my pocket for when I want to hear a podcast or audiobook on my phone. But anyway you can just take off the adapter at any time.

There are adapters that let you do both. Of course that might not be as convenient as native support, but still.

When I replaced my phone I just attached a USB-C Adapter to my wired headphones. It works exactly as before.

There is an even simpler way: the text assumes that the cannonball only transforms after it passed the ring. If you rule that it instantly transforms when in contact with or near the ring, then the whole thing just bursts.