No, you actually want to recharge and keep using as much as normally. That’s usually easy nowadays with USB outlet in any computer, in public places, in most cars, increasingly in public transport. Then - quite a few actually EDC powerbanks.
Same things as always. If you’re worried about dropping a phone, get a case or a tough phone. If you’re not the question is irrelevant.
I believe good majority would be OK with a mule. Maybe not 99% - and the biking example was what made me think so.
But then - maybe the bikers would get a dedicated bike light and carry something else. Like a cell phone.
Do you have a phone that can’t produce continuous LED light?
You presented 4 questions and 0 facts. I suppose the questions were meant to be rhetorical with obvious answers. And they were not.