It makes no sense to me why the Apple product that needs to be charged most of all has half the charge cycle capacity of all their other products.
Indeed you are 100% or even 1000% (if there were such a thing) correct.
Apple stand up on stage, and states, before the world audience that "They make the very best products they are capable of doing"
As you say and as we all know. A company will have much information about "usage cases" of a potential product that they will considering building/launching.
They don't just guess and pluck numbers out of a hat.
Apple know exactly what they are doing. If not we would need to call them incompetent or foolish, and I'm sure even the most strongest Apple hater. knows they are not fools.
It's all planned to the tiniest degree.
They know they are fitting battering that, will be charged more times than pretty much any other device you own.
They know it's going to be powered up and running, or sleeping from the moment you open the box, till the day you sell/lose/break it.
They know it's going to need to be recharged, every day or so.
So this is all deliberately designed into it. It can't be, anything else.
Apple has great chips, the fastest CPU and GPU's and the need nice clean power.
Apple know the batteries they are fitting will only be able to give the chips the power they need for a very limited amount of time before they need recharging.
Could Apple fit a larger battery
There are phones today with 4000 to 5000 mAH battering in them, and they are not 1" thick or weigh the same as a family car.
If it was the case of unclipping the rear shell, every 12 months and popping in a new $10 battery, as used to be the case, then it would almost hardly be a story.
Irrespective of Apple giving reasons why the implemented this "Feature" to keep phones running.
The question for the future should be, Are you going to stop fitting unsuitable batteries into THE most premium/expensive phones in the world ?