Who listens to music, walks around, all while charging their phone? Strawman and not a very good one. Trust you to have a half-empty glass. You want to do that, buy the Airbuds. Otherwise, suck it up and do without Madonna for a while.
I’m usually a silent observer, but I frequently, as in for hours on end, have the phone plugged into the charger, and aux port plugged into the car radio with navigation and a book reader running. I can’t run the navigator and book reader at the same time without discharging the battery in a matter of hours.
It would be a frequent problem for me, at least.
I do it at my desk. Phone, USB cord, and headphones. No need for Yet-Another-Item-And-Cable at the desk. I thought we were getting away from chains and chains of things?
But with the MacBook having just a single USB-C connector, and the Mac Pro requiring lots and lots of external boxes, I guess Apple’s new approach is cables and adapters for all!
PS: I use the USB port on planes all the time, to charge my phone. It’s great for my monthly flights to Hong Kong, where I can read and listen to music for 14-15 hours straight and arrive with a fully-charged battery. No need to break out lots of little parts - one cable, one headphone - done.