so we can assume the battery is old and battered. Does it cut off while you usI have an older laptop that used to get 4 hrs+ on a charge. It now gets 1 hr max. So while the battery holds a charge I wouldn’t say a one hour charge before shutting off is very useful under most circumstances.
Where are you getting this yearly figure from? From what I’ve seen it’s people with iPhone 6S and so on, phones that are years old. I had my iPhone 7S Plus before upgrading to my iPhone X and there was no issues with it battery wise, yes battery’s do degrade over time but Apple were doing what was best in order to stop devices from randomly shutting down, then there would be people complaining that their iPhone’s were shutting down. I don’t see an issue here, if there is an issue with my iPhone battery I get it replaced or a i buy a new iPhone. If your not happy with what Apple have been doing your more than welcome to try the competition Android which also has issues.
Here is one example
If that was the case, nothing would be happening right now. My wife's 6s+, within months into ownership, started restarting under heavy CPU load (doing Ingress in the park) - also seemed to correlate with colder weather - while my 6s+ had no problems. In under a YEAR of ownership, her phone got to the point where it would shut off and reboot 5-6 times in a 2 mile walk under 60% of charge. coconutBattery showed her phone's design capacity fluctuating from 40% to 60% to 90%. Meanwhile, my 6s+ was fine.
My wife's 6s+ had easily 1/3rd the capacity of my 6s+ (by 12:00pm my wife's battery would be at 20% while mine was at 90%). Yet when we took our phones into the Apple Store, they said my wife's battery was "green" and refused to do anything about it - even though we showed them a shut off. This was under a YEAR of ownership and under 250 cycles.
Apple guarantees their batteries 500 cycles and 80% design capacity.
If my wife's 6s+ didn't have this problem, we'd still have our 6s+ phones and not our 8+ phones right now.
My 6s+ was fine, my wife's 6s+ was not fine - just cuz yours is fine doesn't mean others are fine.
From my perspective it was planned ignorance. Apple new they had a batch of bad batteries and instead of fix them or offer cheaper replacements, they initially tried to help/hide it by slowing down the CPU frequency.