Agreed it's a silly policy. Anecdotally I was asked to remove my headphones during a flight I took about three weeks ago. My headphones are Etymotic mc3 which I use as earplugs during takeoff and landings. I was sitting in an exit row across from a flight attendant who was facing me in her jumpseat. She had no problem with me wearing them (she could see they weren't connected to my iPod), but the head flight attendant came over and told me to remove them for takeoff.
As the engines were throttling up for take off, I put my fingers in my ears to (I'm an acoustical consultant and my livelihood depends on my ears so I'm a stickler for protecting my hearing) - the FA sitting across from me saw me do that and told me to go ahead and put my headphones back in.
As the engines were throttling up for take off, I put my fingers in my ears to (I'm an acoustical consultant and my livelihood depends on my ears so I'm a stickler for protecting my hearing) - the FA sitting across from me saw me do that and told me to go ahead and put my headphones back in.