I blame it all on TCAS.
Farnborough are trying to create a 'known traffic' environment in order to avoid pilots and controllers having to fill out endless reports due to TCAS RAs. Every RA generated, all parties concerned have to fill in a report you see, whereas prior to TCAS, the controller gave traffic information or avoiding action and everybody was happy.
Although TCAS has its uses in class G, it's very annoying (and potentially dangerous) when you pass details of a non transponder aircraft to an aircraft with TCAS, then the aircraft with TCAS gets an RA from other traffic and climbs or descends straight at the non-squawker!!