? My iMac has a power switch. My iPhone and iPads have power switch equivalents - sleep/wake button + volume button
I can go weeks or even months without using a particular set of headphones. With my Sony headphones I check the power level before I turn them off. I know I'll be good for power when I power them up after weeks of non-use. Besides the inconvenience of having to use the case to set the Airpods max in low power mode, it sounds as if there is still power being used even when in the case. I assume that they eventually would lose all power much faster than the Sony headphones which, being powered off, would have either a null or very low power draw.
My headphones are kept on headphone stands. I just pull a pair of headphones off the stand to start using them. The case prevents me from doing that, and as they lay flat take up more counter space. Having to remove them from the case is just extra work.
Guess I'll have to wait for a revised model.
There’s lots of headphone stands available that will accommodate the APM with the case, unless you specifically want the old head shaped stands, of course.
Or if that’s the kind of stand you want, you could be like me and not use the case very often. The power drain on mine has been negligible out of the case, 1-2%/24h. So long as I remember to juice them up when they get low, as with any of the wireless cans I have, I don’t have a problem.
Incidentally, to Illustrate the lack of power drain I experience. I'm now on day four since they were last charged and since they were last placed in the case. As I'm mostly working downstairs at the moment - apparently I'm too noisy for my wife in her craft room next door, working from home

I had just been putting them on the table, but in the past couple of days they've been on one of my headphone stands (the charging station I have set up for them is in my office and I can't be bothered moving it 😁).
Anyway, I should have been monitoring times more closely (I'll do that at some point), but totting up the hours of listening in the past 4 days would easily surpass 10 hours. My headphones are now at 60% of the battery left, I don't consider that to be too bad for something with a claimed 20 hours (or whatever it is) of battery life.
If I were to just leave them sitting, not playing music it would (going by what I've observed over the past few weeks) take somewhere between 50 and 100 days, before the battery would give up the ghost. I'm sure I'd remember to top the battery up at some point in that period.
Further battery update. Today (Monday) is day 6 since last charge and last time in the case. Across Saturday and Sunday I used them for a further 7 hours 47 minutes, bringing total use to around 18 hours (estimated as I hadn’t counted for the first 3 and a bit days).
My battery is sitting at 31% which isn’t bad for almost a week with quite a lot of use. Either that’s going to drop very rapidly, or I’m going to exceed the advertised 20 hours. Though again, 10 hours of that use was an estimate for the first three days, albeit a conservative one as they were without doubt used more then, than they were over the weekend. Incidentally, I always have Transparency enabled when I use the APM.