Most hotel rooms still have radios/speakers with the 30 pin adapter.If they change the ports next year, it will make the iPhone 8 (and presumably all of the 2017 iPads) incompatible with the millions of third-party products sold from 2012 that let you plug Lightning devices into them.
So basically, you're proposing to screw with the tens of millions of people who own Lighting accessories like the ones below (by suggesting that Apple make the next iPhone with a USB-C port instead of a Lightning port), because it's too much of an inconvenience for you to go out and buy a $20 USB-C to Lightning cable for your MacBook Pro/AirPods?!?
But I do see your point - With Apple, expect less.