It actually does more than fixing the mess now. With pipewire >=0.3.34, there is now support for a2dp duplex with both faststream and aptx-ll codecs (if the headset also supports them, of course). No more hsp/hfp crap.

I think linux + bluez + pipewire is the first ever software-only stack that can achieve this, as a USB dongle would be required on other platforms. We shall declare 2021 as the year of linux on the desktop!