I have AirPods Max and I have the cable. Do you?
Listening to music using the cable is better compared to BlueTooth. However, spatial audio and other features available in BlueTooth mode is not working when the cable is plugged-in.
Apple should make wireless “truly wireless” where wireless is lossless.
To start, yes I have the AirPods Max and cable.
And as you said, it’s higher quality than Bluetooth, 24-bit 48 kHz to be precise.
As for coming anywhere close to 24-bit 48 kHz over Bluetooth, fat chance.
Apple might be able to make some cool things, but going from AAC/256 up to 24/48 over a wireless connection, while keeping the exact same reliability, latency and battery as exists right now is impossible.
Almost every attempt at a lossless wireless protocol has either failed or had major compromises made, Apple isn’t magic.
If you need higher quality that bad, plug in the cable.
As for spatial audio, it doesn’t even matter because that’s not lossless.
The Dolby Atmos files that Apple Music, Amazon music and Tidal use are lossy.
Lossless standard 7.1.4 Atmos mixes are absolutely massive, and are usually only available on physical media like Blu-ray.