Probably preaching to the choir here, but headphone jacks are really a must, and USB-c adapters have their limits
Just randomly sharing my experience here. My sister told me a few weeks ago she was going to change for a new phone (a Motorola, she likes AOSP-like experience). I noticed that her new phone wouldn't get a jack.
"Yeah, I know, I hope I can make it work with a USB-adapter". She has nice headphones that she likes to use, so USB-C earplugs were not an option.
Fast forward to today, she told me the adapter she got starts to malfunction:
she has to twitch the jack in the adapter for the thing to work
when she plugs the adapter in, Google Assistant takes over and randomly starts skipping songs.
She's now considering getting wireless earbuds, but she's not a fan of having to recharge them to be able to use them, and is also cautious about the e-waste potential.
My friend group used to be very big on "pass the aux cord" when we're hanging out. It was incredibly easy to switch out our phones (or iPods and portable CD players before that) to let all of us contribute music for the gathering.
Now? Ok, I disconnected from the BT speaker. Do you see it yet? Lemme try turning the BT speaker off and on again. [BING BONG!; "Connected"] Ugh, it reconnected to my phone. Let me just turn BT off on my phone and you try again.
It's just such a PITA with BT, and having to keep USB-C and Lightning adapters on hand is even more annoying than that. If only there were a reliable and dedicated connection for audio devices....oh well.