Seems so, there’s a constant named AIR_TAG_SOUND_CHARACTERISTIC with this value: 7DFC9001-7D1C-4951-86AA-8D9728F8D66C
Probably some people change the configuration to take AirDrops from everyone, but I'd expect that to be a small minority.
All of this reminds me of good old bluejacking, which was when we did the same thing using Bluetooth.