But you are missing the point......no one is disputing how throttling works.It won't be. Apple doesn't bluff when making public statements like this about technology. They know they can prove what they've said about how the throttling actually works.
What is at question is WHY did they NEED to throttle the iPhone in the first place? Because there was a defect in the way the battery and CPU voltage is managed at the hardware level. So to prevent phones from shutting down....they throttled them. This was done to prevent the defect from becoming public and forcing a recall to replace the batteries.
So instead they are offering to have the defective battery replaced at $29 for the consumer.
Batteries normally degrade...that is not the issue. But they should not force a phone to shutdown through normal use when there is plenty of battery life left. That is what was happening on the iPhone 6 and 6s and Plus models. So to get around the recall or mass replacement of the batteries......they throttled them.