Apple's throttling was an undisclosed optimization that was controversial because it was not disclosed. The optimization itself was not controversial. It was not premature either. If the battery's measurable levels (impedance, current, voltage, etc.) fell out of nominal range, then throttling occurred. FWIW I somewhat resent having to 'defend' Apple here, but your narrative frame here has too much speculation for a situation finalized in fact in 2017, almost 10 years ago.