Phone DACs aren't very good. I use a very expensive DAC when I listen to music at home because I actually care. I also own a pair of AirPods because in a noisy city environment walking around it doesn't actually matter that I'm losing fidelity.
As I commented elsewhere the problem with Bluetooth is fatigue related not listening pleasure related.
Edit: As a side note the only positive I can see out of removing the headphone jack is the potential proliferation of quality DAC/preamp dongles. Still annoying though.
It's sad and pathetic watching this mission creep of audio degradation at the greed-fueled discretion of corporate profiteering.