The problem is the "perpetual novice" sentiment.

Smartphones are sold with the underlying assumption that 'user friendly' equates to zero training or learning. The idea is that UI is so intuitive that you can simply pick the phone up and use it.

It's clear that this novice strategy has upper limit respect to the number of features.

If you spend $500 on a device that you use more than your car or computer, maybe you should spend 6-12 hours to learn it. People take courses in woodworking, knitting, why not smartphones.