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)
I'm pretty sure the rise of BT headphones is solely due to Apple removing the headphone jack.
Yes, I know BT headphones have existed before, I was an audio/technology editor, so yes I know. Which is why I also know how tough it was to get some half-decent BT audio adapter or earphones 10 years ago, even tho BT 2.0 was in every phone for close to a decade already. Then within few weeks to months after the jack removal and introduction of AP, the market got flooded with them. Don't tell me it's a coincidence.
It may sound like a good thing to have so many choices, except you're losing the original choice of whether you want it in the first place. Combined with another lovely trend Apple has kickstarted - non-removable batteries - it just means yet more ewaste.
And I'm sorry, but the whole idea of "true wireless" is fucking terrible. I use sporty BT earphones I can hang around my neck or just put in a pocket when I'm not using them. Fiddling with 3 separate small things every time I want to take earphones in and out is madness. Of course you'll loss something eventually.