We All in this country live in a democracy enabling individuals a right to criticise but not to be personal in terms of abusive, threatening, racist or in anyway causing personal offence.
Politicians, police & Doctors can be criticised, referees cannot, they cannot be criticised & are above being called to account pubically.
A closed shop exists via the RFL, but the issue is Never aired, at best an appology can be given or the referee misses one game !
Therefore the sport runs a closed shop liked or lumped, they are above the statute law & all redress,