I think you are confusing those who say they are gods gift to _________ and those of us who say that we know what we are talking about. If you are going to do that then you have to occasionally blow your own horn; as with this thread where I try to differentiate what I do and a skilled technician who takes a new climber under his/her (happy Guy?
) wing.
This may be were the difference between professional and Professional comes into play. When you parse the argument this then the climbing arborist is professional, where as the "Arboriculture Professional" has a sufficient knowledge of many different scientific disciplines.
A Professional Arborist also knows something about mycology and soil science.
Guy can go on for hours about mushrooms and soil types;
therefore, Guy is a true arborist.