Phone OS's all use various methods of power management between the battery and the system. This is a frequent and ongoing practice. I absolutely do NOT want the OS to "notify" me in each of these instances.
This whole "issue" was and remains a non-issue. Legally exploiting what was actually a BENEFIT to those with older phones and degraded batteries.
IT DOES NOT MATTER if it was a benefit, UNLESS you let the end-user know. You don't want to know? Fine, I do, and millions of others want to know, but I wasn't given that choice.
The courts agreed. End of story.