The headphone jack would be less painful of a loss if phone manufacturers started adding a second USB-C port on top of the device. That way you wouldn't have to choose between charging your phone, listening to your game without lag and in privacy, or carry a dongle to try doing both things at the same time.
I have corded USB type headphones. It's not a good replacement. The dac is in the connector which makes the portion that sticks out much larger; the port isn't designed for even mild leverage to be applied to it regularly. Go cycling with your phone in your pocket or even just sit down multiple times with your phone in your pocket while the usbc headphones are plugged in. They will either work their way loose or they will start to break the phone's port. I'm not even covering how the USB type c spec leaves a lot of room to be interpreted differently by companies, significantly increasing the probability of headphones working for only some phones.
It would be a very strange design approach to add an "backup" port. I think there are alreay gaming phones that have it?
But for the normal person this seems to be odd.
I would like that we can exchange those ports without removing the display... i had two phones that had broken usb c ports. A good thing we have wireless charging.