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?
News to you most users moved over to bluetooth headset thanks to the airpods(?) craze. Only a few people are stuck with 3.5 headphone (some for valid reasons other for bogus ones). Hence it makes sense that the jack can be rationalized to safe a few cents per device.
Meanwhile Cameras are used widely thanks to social media and everyone wanting to be a influencer…