One should be at the bottom one at the top. I understand space on the phone is a premium but a second port would make the phone so much more usable. Wired headphones, flash drives, camera modules, speaker modules, keyboards, even connection to a TV, all could be used while charging. It's a shame it's not a thing, USB is extremely versatile port, but you only get one and it's used for charging half of the time. (I am aware dongles exist)
The usb c port on my 2 year old phone is still virgin...never plugged in a cable, ever. My dash mount charges wirelessly, my overnight charger charges wirelessly. I have a wireless charger on my desk if I need it (but never use it). I cannot imagine needing a 2nd usb port.