It also isn't clear what long term effect they have on the head and face. Every electronic device has a magnetic and electrical field around it which does aggravate cells to some degree. Airpods also have RF to add on that. It probably isn't a good idea to have electronic devices on your head for long periods of time. We will know after a few generations.

Jack Kruse woke me up to this. Now I try not to wear any headphones.