Samsung and/or their customers mocked the iPhone for not having wireless charging, but then when it does have it, they moan that you can't listen to your iPhone and charge it at the same time, when you clearly can by using a wireless charger which costs about £6.
I've had my iPhone X since launch day on Friday November 3rd 2017, and I have *never* needed to plug both the headphones and the Lightning cable in at the same time. YMMV, but my mileage is fine, thanks.
I also don't get this dongle nonsense. You might own a pair of headphones that you want to use with your iPhone, great, so put the adapter on your 'phones AND LEAVE IT THERE. It adds about 8cm to the length of the cord from your 'phones. And it was free. What's the beef?