An amateur is, by definition, a lover of the craft. There is little to color the purity of intent and execution. Distractions like money, adulation, grading or winning. Is it not, then, more apt to center around the amateur rather than the professional?
A professional is not approaching from a point of purity but rather to please and succeed. One being tied to the other. Our industry has forged this mentality and it is not working well at all.
The amateur wants to express, to communicate. What is lesser about the message that an amateur communicates compared to a professional?
If the message is the same, then it is only the technical means to express it that remains in the way. This obstruction can be conquered with time and discipline but technique without a message is empty.