So I read the title and immediately thought of people on their literal death beds that might be feeling alone in those moments. So transitioning from that to 5% phone battery definitely made the battery issue feel insignificant.
That being said, yeah, 5% is scary times. Certainly nobody gets that low on purpose. And I use the word low purposefully LOL. You become afraid, scared, panicked. Interesting concept. I'd assume it's a social experiment rather than a money-maker.