Its the Club mentality, I'm afraid. I'm sure the Ferrari owners club (for example) don't appreciate a man in a Ford turning up at their meetings. This is a particularly English (not British) trait, and one that will probably be with us for a while.
As a PPL, this is the very first time I have contributed to a thread other than in 'Private Flying'. Usually, I have no desire to, but I do enjoy reading the contents (for interest as well as amusement) of various fora.
My suggestion is to keep the site as it is, with all the variety, lunatic posters, wise old men and others, but take the word 'Professional' out of the title. This may take the wind out of the over-inflated sails of those who started this thread.
PPRUNE is dead - long live PRUNE