My iPhone 6 was nearly unusable until they added in CPU throttling. It would try to draw more current than the battery could provide, which caused the phone to shutdown. Sometimes I would get the same issue during the boot process, which effectively created a boot loop. Resolving this issue was Apple’s stated reasoning for implementing the throttling.

I am no Apple fan, but in this case, I think the only thing they did wrong was not communicate what they were doing and not give the user an option to turn throttling on or off.

Honestly, this whole episode screams “Well meaning engineering team fixed a problem, but didn’t consider the optics of such a change.”