I agree with this. I would add that if you are looking at the description of the next level up, that most of what is listed is excessive. If I look at my current job description, half of it is either not necessary or it's only necessary to understand the concept.

One other thing that I realized after being in the field for 8 years is that it is becoming more difficult for me to learn in general. When I first started, I could repeat almost all key pieces of information from a meeting verbatim.