These things are dangerous, the signal from airpod to airpod - travels directly through the brain. No thanks
Cook wants to literally "cook" your brains.
Anything that transmits a radio signal does so in a relatively spherical manner which is to say the signal from your cell phone to a tower is going directly through your brain too, even if the tower is the other way. Also Bluetooth is extremely low energy as is wifi. Cellular modems transmitting is orders of magnitude more energy. I don't think there's credible evidence this kind of non-ionizing radiation does anything bad to us, but even if it did, BT would be the least of your worries.