Both of those positions are valid. Bigger batt for $50 more would be great, vs meeting a price point and fewest possible skus.
I would yoink one with the biggest battery possible too.
But I would aslo do the same for several other upgrades that I particularly value. I would take as much ram as they want to offer. I would take as much ssd space as they want to offer. I would take as much ssd speed, cpu, pixels, as they can deliver. I would pay whatever it takes to make it weigh less and be smaller while still doing all that. And don't forget to put at least 2 full speed usbc/thunderbolt/hdmi ports so I can have external portable monitor without drivers.... Then again I don't want touch, or any form of face or fingerprint, or any more than the minimum gpu to run a traditional non-compositor desktop and display video at 30fps.
But now I have completely obliterated the entire concept of meeting a target intersection of functionality and price. I've thrown price right out the window.
And, that's just my personal individual set of priorities. You don't care about half the stuff I would pay anything for, and you probably do care at least a little about stuff I actively don't want. (gaming gpu, touch, face id, hell webcam at all)
So, back to the beginning, they came up with a reasonable set of functionality to target, and a reasonable price to target, and really, even though I too would like a big battery, it makes no sense to talk about $250 version that has a bigger battery.