Latest iOS updates are slowing down older phones to - allegedly - mitigate unplanned shutdowns that are happening when older batteries provide insufficient voltage.

Two issues:

1) No other smartphone seems to be shutting down because of older batteries.
2) They didn't tell people they were slowing them down - or provide the user the option.
3) (I lied.) Boy, this sure would be less of an issue if batteries were user-replaceable, wouldn't it?