Except that there is precisely zero microUSB headphones on the market. Its not the fault of microUSB of course, but from the consumer point of view, it is an advantage of USB-C (or Lightning for that matter). Like for example, the advantage of using Android over WP is you get access to Snapchat. Is it because WP is not capable of such things? No, but the app ecosystem isnt there on WP, and thats all that matters for an end user.
On the mobile device, the difference is very minimal since the DAC also uses power. On the headset, a 5-10 minute charge can easily last a whole day of use. You’ll waste more time un-tangling the wires of a wired headphones than it is to charge the battery of a wireless pair.
Thats true to a certain degree. With a headphone jack, if your phone manufacturer decided to cheap out on the DAC, then youre SOL. You can get a $1000 headset and it is not gonna sound as good as a $100 Bluetooth one.
Keep the dongle attached to the headphones all the time, imagine as if it was a USB-C headphones. No big deal. That is, if you still live in the relic of wired headphones, in the first place