Bravo!
That is a very interesting observation on the word "amateur."

In the U.S. and most of Western Europe, for decades "amateur" was good and "professional" was bad. That is, "amateurs" were people of the nobility and wealthy classes who did not have to work for a living and thus could devote themselves to the purity of competition for the sake of honorab;e competition alone. A sports professional -- that was a low class invividual who had to labor in the trenches (for instance, by getting beat up in the boxing ring on a regular basis for the entertainment of audiences) in order to put food on the table. The Olympics were reserved for "amateurs." "Professionals" were barred from competing, lest the noble amateurs had to -- ugh, yuck -- rub shoulders with the common riff-riff.
Funny how times change. Now if you are a pofessional that means you are really, really good, whereas if you are an amateur that carries the connotation of untalented beginner.