If you for instance take off your AirPods Max with 80% charge left, wouldn't use your headphones for 2 weeks and then suddenly want to use them... too bad, battery is dead, first charge them. While any other headphones would still be at 80% as when you turned them off two weeks ago. To some people that's a deal breaker (for me for instance). I use my headphones sometimes every day of the week, sometime not for 1 week, sometimes not for 2 weeks or longer, but every time I grab them they have enough charge to be used for hours.
Many people use their headphones every day for multiple hours. But some people enjoy the over-ear experience only on occasion (I have my regular AirPods in my ears for 8 hours per day). And for those occasions I prefer good quality, so spending €630 would be a lot, but worth it. I have the XM3's and they are great, but the plastic creaks sometimes and that's really annoying. So I would really enjoy a better build quality, but not at the expense of having to think about charging it (like my damn Apple Pencil which is always dead because I don't use it often and you can't turn it off).
Many people use their headphones every day for multiple hours. But some people enjoy the over-ear experience only on occasion (I have my regular AirPods in my ears for 8 hours per day). And for those occasions I prefer good quality, so spending €630 would be a lot, but worth it. I have the XM3's and they are great, but the plastic creaks sometimes and that's really annoying. So I would really enjoy a better build quality, but not at the expense of having to think about charging it (like my damn Apple Pencil which is always dead because I don't use it often and you can't turn it off).