<<No doubt it is very important to get out of the way of an aircraft that has declared MAYDAY in any country and not doing so is very unprofessional.>>
Not sure what you mean by "get out of the way"? Are you suggesting that pilots should make their own decisions about getting out of the way? In a busy TMA that could be incredibly dangerous and highly UNprofessional. Perhaps it may be necessary in some places but where I've worked ATC takes the necessary affords appropriate priority and safe routeing for the emergency aircraft.