The notification itself is super helpful if you care about battery health. There are apps that try to do it if your phone doesn’t have one, but they aren’t nearly as well integrated into the system and are therefore more clunky.
The insane/annoying part is just that the setting is not opt-in. Or whether there’s a setting to turn it off.
Pixels have this too. I believe one plus does too but I don’t remember. Idk about anyone else.