The other option would have been to alert the user this was going on. This didn't always happen. They were degrading users phones while showing the battery as

The other option would have been to alert the user this was going on. This didn't always happen. They were degrading users phones while showing the battery as fine. That's the problem, you can't just start degrading performance without telling people why. When you have people running 3rd party apps to determine whether their phones are still running fine, and then going to get battery replacements and finding performance returning, and nothing the OS told them indicated anything was wrong, that's a problem.