> You can get one of those adapter things and just leave it attached to your headphones if you wanted.
The problem is that I’d have to unplug that adapter to use my headphones with a device other than my phone, including other Apple devices like my Macbook. I would subsequently loose the adapter, guaranteed.
If the world could agree to use USB-C for everything, that might work, but Apple—who started this mess—is a prime holdout there.