Every persons hearing is different. A pair of headphones that has perfect sound for one person could be absolute rubbish for another. Until an independent sound engineer with the correct testing gear for headphones put's the airpod max through it's paces and compares the results against the best that's currently available, having someone say 'these headphones are great' is irrelevant because what is good for them might not be good for another.
And then there's the issue of comfort - if they are uncomfortable to wear for you, then the sound quality becomes almost irrelevant.