Even with wired headphones, the volume setting didn't directly correspond to a decibel level. High quality headphones often have a higher impedance than cheaper ones, which makes them much quieter (unless you use an external amp). The automatic volume reducer thing was just always pretty frustrating in the past.

Or at the very least a 2nd USB type C port. Personally, use wireless wouldn't mind using wired if my future phones were guaranteed to include that option.