That's trivially false. There's a large difference between products designed primarily to have a low learning curve, and products designed to maximize the efficiency of users that have been trained in its use.
Otherwise, you can most of the time make a product which can be easy to use for novices while retaining maximum efficiency for experts.
Maximum efficiency for experts requires removing information that would be distracting and redundant for them, but essential for novices to understand the working model of the program, so you're pretty much wrong.