I dont currently have a phone old enough, but my iphones before this throttling was implemented did shutdown a lot once the battery was worn out. It would some

I dont currently have a phone old enough, but my iphones before this throttling was implemented did shutdown a lot once the battery was worn out. It would sometimes show 30%ish battery remaining, but if you tried to do something that required heavy load and thus extra power that the battery couldnt provide, it would shut down. Give it a minute and it would turn back on and happily run down to much closer to 0% before being truely dead. The throttling prevented sudden spikes in power usage. I dont think it was fundamentally a bad thing. It made your phone useful when it otherwise wouldnt be. A processor operating at 50% speed works a lot better than one that shuts itself off. But Apple probably should have been more clear about it and offered a toggle to turn it off.