In my house I can stream through the wifi in full bit perfect 24/384 or DSD512 but usually not more than 24/192 using DLNA. I never even thought to use BT. My daughter will use Airplay from her phone to the same endpoints on occasion and that is limited to 16/44.1. Apple has a newer version but hasn't licensed or published it for others to use. I can mix and match whatever I want using this system and it is free and easy, only the hardware costs money but not much. As a videophile maybe you can appreciate that I still use my Panasonic Plasma as my regular TV. It'll be a sad day when it dies. At the time it was high-end too, but plasma was on the way out.
My audio is all DIY tubes with the exception of the digital part. Speakers are DIY too. I could never afford the speakers that I really wanted so I built some myself using the same drivers that the super expensive ones use, with a crossover designed by one of the experts out there. No Bose nor Bang&Olafsen for me. I always cringe when I hear someone bragging about their car system based on those.
So yea, this may be a nitpicky point about the M3, but I take it seriously. I guess I can live with it unless it sounds truly bad.
Digital is whatever the standard is of the day but analog is forever...