My volume control was already bad prior to the UX3 update. It was like 0-10 = Usable; 11-99 = Unreasonably Loud.
Now, it's exactly as you described.
Four positions that can be listened to without damaging someone's ears. I was genuinely excited for an infotainment overhaul because I thought things could only possibly improve in the audio department. I've been proven wrong.
My current "workaround" is to discontinue the use of Android Auto, and listen through Bluetooth. This way, I can use my phone's volume control as a baseline (set to about 50%) and make nearly the entire in-car volume range
somewhat normal again.
I also still don't have the Directional Turn Signal Audio that was supposed to have shipped back in January 2025.