I think you’re disagreeing with him. It’s incorrect to describe his advice as misleading in that case.

The idea of charge more is that it brings more revenue into the business and allows it to continue succeeding and producing value for customers. Charging more charges for that value.

The advice is also mostly for b2b or b to professional, so if the product truly brings value to the customer they actually can afford it.

Undercharging kills businesses and does no one any favours in the long run.