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?
You can buy a small Bluetooth/3.5mm adapter. I have one for my amp when I want to play music through it. It also works with earphones. It’s about the size of a credit card but obviously thicker.
… and requires you to use Bluetooth headphones that you have to keep charged…
If they mean what I think they do… There are Bluetooth ->3.5 “adapters”… E.g. Bluetooth source (phone), analog output (headphones). Logitech has/had one and it works well.