Don’t get me wrong. Apple removing audio jack was the biggest facepalm in smartphone history. And you can thank it for not being able to make an upgrade without sacrificing audio jack (and SD card too :/). But USB-C is getting standardized everywhere now (laptops, smartphones, etc.). What makes USB-C earphones not worth the switch?
Plus basically every other piece of audio equipment has a headphone jack, and there’s no reason they should start being manufactured with USB-C ports with all the added complexity, when all they need to do is send audio.