USB DAC works just fine and it worked fine back in 2015 on my moto g2 and still does. Maybe it doesn’t switch for calls (idk) but for music it’s perfectly fine. Slap apple usb-c 3.5mm dong and be done with it
But yeah lack of 3.5mm is purely bullshit, there’s no excuse not to have it other than saving money/laziness. You could fit 3.5mm in jolla phone 1 which was much smaller but fitting one into jolla phone 2 is now an issue? yeah bullshit