He who is Jeff Liebermann said on Wed, 27 Dec 2017 08:48:50 -0800:

Sure, but if Apple did NOT reduce consumption somewhere as the battery
aged, you would complain that the iPhone battery didn't survive the
warranty period or operate the advertised number of hours.

Fair enough observation but the Materials Science experts seem to be
inferring a different take on that same sentiment, by stating that Apple
batteries were sold with intolerable (and unadvertised) performance decay.

They "clearly came with intolerable performance decay." says The Verge.
https://www.theverge.com/2017/12/21/16806582/apple-battery-slowdown-science

What I find disgusting is that Apple did not make the feature optional
and controlled in the settings.

Lawsuits argue Apple had to keep the permanent throttling to far less than
half the advertised speeds (from 1,400MHz to 600MHz) secret if the reason
was they didn't want to honor warranty claims.

https://www.theverge.com/2017/12/20/16800058/apple-iphone-slow-fix-battery-life-capacity

When we're done complaining about the evil Apple, we can then switch
our focus to the evil Google, which extends runtime and battery life
by disabling display intensive features and reducing OLED display
brightness if it detects a weak battery.

This is only related if it was done secretly, permanently, and drastically.

https://www.google.com/patents/US8407502
See the "Summary" section. The phone still works, but all the fancy
features are disabled and you can't see what you're doing (only red
LED's are active).

Is this slowdown drastic (far more than half the advertised speeds)?
Is it secret?
Is it permanent (for any given battery)?

This might be a serious problem for someone on
Viagra, who's vision is shifted towards blue, and doesn't see any red.

As of December 11th, 2017, that problem may increase!
https://www.goodrx.com/blog/generic-viagra-in-2017-sooner-than-expected/

Cutting features to enhance battery life is nothing new. Palm has a
patent for saving battery power by switching from battery guzzling
color, to a more economical monochrome:
"Method and Apparatus for Selectable Display Mode for Intelligently
Enhancing Battery Life"

Is this slowdown drastic (far more than half the advertised speeds)?
Is it secret?
Is it permanent (for any given battery)?

Meanwhile, Intel offers CPU's that self-throttle if they draw too much
power, get too hot, or are in danger of turning off before the end of
the movie or big game. Most of the technology was inherited from
Transmeta:
"Adaptive power control"
https://www.google.com/patents/US7100061
https://en.wikipedia.org/wiki/Transmeta

Is this slowdown drastic (far more than half the advertised speeds)?
Is it secret?
Is it permanent (for any given battery)?

I'm sure if I dig some more, I'll find other patents for ways to
generate longer battery life numbers at the expense of other features.

IF they're not secret, permanent, and drastic (throttled to far less than
half the claimed CPU speeds), then they're relevant.

Otherwise they're just red herrings.

Hmmm... my battery is low and old. Maybe that's why I'm losing at
Solitaire?

Nope. It's why that huge power outage a week ago by PG&E was caused by the
winds coming from the north instead of from the south like they usually do
where you live!

Seriously though ... since you are generally old-school and balanced, do
you really consider Apple's secret, permanent, and drastic (the cpu is
chopped to far less than half the claimed speeds) is equivalent to a
temporary, slight, and obvious slowdown?

Really?