Earlier quoted context omitted.
I tried to find a laptop with the specification you just mentioned that could last 20 hours on battery. Didn’t.
I'm personally always near a wall socket. My laptop is mostly a desktop. When I'm out and need to use the battery, it's only for a few hours. Do people really need >8h battery life?
(a) should have been fixed years ago but still randomly happens on my partner’s laptop. (b) is a pain to deal with when you just want to get in to work. No longer having wall wort proximity anxiety every time I go to use my MacBook is really nice.
I’ll move back when laptops catch up though since I miss dual booting.