Now my choices are:
- AirPods, which I don't want to shell out more money for and deal with charging/caring for them, but otherwise they'd be the best option.
- Non-AirPod BT headphones. I have nice Bose ones from work. These lack Apple's extensions to improve pairing and headset (mic) mode. In headset mode, the earphone quality drops to like worse than early 2000s cellphone. Standard pairing is annoying. It's a bit annoying having to charge them. I also don't want to shell out more money for earbuds (the headphones aren't so portable).
- Dongles, which I tried. Turns out they don't work with inlined mics, don't work with older iPhones (so I can't leave them on a shared car aux), are fragile, and are really easy to lose. Can't charge while using one either, but that's nbd. My car seats ate two and the last one broke. It also just feels stupid having to use these.
- Old iPhone. I kept my 6 until it broke. I still have a spare 5, no longer usable with AT&T, which I use to play music in the car.
Yeah I want to listen to music on my phone, but they've made it sufficiently annoying that I don't anymore. It's a clear regression.