Kind of misses the point. I'd rather like to charge and use my earphones at the same time. It's not an unobvious use case!

Just wait, the next iPhone will be symmetrical with a notch and a lightning connector on each side.

And the solution already exists within the product: wireless charging.

There are a few adapters that do audio out and lightning in for charging. Apple makes (made?) a dock that was similar. They all have pretty bad reviews unfortunately. USB-C and Android seem to have the same lack of solutions.

I was looking for one because one of our cars has no bluetooth, and the other has bluetooth that won't talk to any recent iPhone, and my iphone 5S is getting flaky. Wish I hadn't missed the SE over the weekend.