I know the point has been made and I'll say no more. I promise. The dog with a bone is the only one still fascinated - I do know. But your use of the word "top professionals" is illuminating in this context, perhaps especially because of the smooth ease with which the phrase "rolls off the tongue" as it were. The idea (although ideology a better description) that, say, a "senior product manager" is held to be vastly worthier, through such things as salary, permanent contract, company pension, company car (this is a general point - I do not know the details of RSPB staff's recompense) and so forth compared to, say, a reserve warden or other significant and well qualified conservation employee is a fascinating one.