That’s the literal truth, but the subtlety behind it was that CPU spikes combined with low voltage batteries were causing phones to shut off. Apple’s slowing down the phone down was nominally because customers prefer slightly slower phones to phones that shut off unexpectedly. Should they have announced this as a feature and had a toggle switch to allow users that preferred the option to disable it? Of course. But I don’t necessarily think they did the wrong thing.
Thank you for the sanity. This is like being being mad at Ford because a 20 year old truck runs worse than a new one, and they’d want some engine design that would make it rev in to redline (and blow up while driving) to keep the original horsepower.