The AirPods Max digitize wired input with a 48kHz sample rate for processing, so even using the ($29!) cable won't deliver any sort of benefit from this.
I'll skip the whole debate about how good perceptual lossy encodings actually are these days and whether any person could reasonably expect to hear that measured difference, but just wanted to clarify that the sample rate of the headphones' built-in ADC shouldn't be conflated with the lossless codec.
I haven't seen anywhere whether AirPods can do 192kHz AAC over Bluetooth, which in my opinion would be more interesting. I assume not if all of the DSP stuff is done at 48kHz.