Yes, wireless is nice. But realize, this move now forces you to, in many instances (such as low battery or situations where you CANNOT use Bluetooth like on flights within Asia) to have MORE connectors and dongles than before.
Instead of just a USB cable (for charging) and a pair of headphones, you now have to have a Lightning-to-USB cable, a hub that has at least two ports (one for charging, one for the phone) and one Lightning port (for the headphone), a headphone, and that USB cable.
So you get to carry extra things and string more spagetti around. All because what you could already do - wireless audio - is now deemed as your ONLY choice, if you want to use your Lightning port for anything other than audio (like, say charging).
More stuff to carry! Hurray!
Point taken. However, I wouldn't bother having all that on a plane in the first place. I currently use bluetooth headphones on every flight. The duration of the battery charge is more than enough for flights. I recharge in the hotel room. So all the gear would be stowed away in luggage for flights.