Gengis
The "cultural divide" at EGTC that you refer to is absolutely the case, or certainly was when last there and observed over many previous years.
I found this rather odd : As a product of Kidlington some 20 years back, there were the airline sponsored guys & girls who wore blue trousers/white shirt during business hours, and the privateers who dressed as they pleased, but that was the only observable social and professional difference, we were all there with the same goal, and from a very diverse aviation gene pool.
Perhaps this is all part of the 0-ATPL thing, there is no gene pool, just a product for the PTF industry.