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?
Apple are the last ones you can accuse of planned obsolescence in the phone world. They support their phones for 6+ years. They will replace your battery for cheap as chips.