What criterium do you use to determine what is 'too much'?
- More than you?
- More than is healthy (where your consumption is already borderline)?
- More than Apple designed the battery for?
You forgot the choice of people who seemingly cannot walk, wait in line (or at a stop light), or "just be" without staring at their phone. Once you become aware of everyone around you staring at their phones instead of just being aware of what is going on around you (or god forbid, conversing with someone next to you), you realize that people use their phones "too much".