With unsymetrical aerofoils the Center of Pressure moves along the Chord with different Angles of Attack, this is likely to be the cause of 'Servo Transparency'.
so you accept that your statement above was complete tosh then
Servo transparency is all about the amount of hydraulic power available in the jacks to oppose the aerodynamic forces trying to return the blade to flat pitch. Aerospatiale claimed it was a design feature to prevent pilots overstressing the aircraft
As for Cierva - if you read deeper you will know that while the flapping hinges prevented the undemanded rollover - the dragging hinges prevented the lead-lag loads destroying the blades at the root - therefore equally clever
Back to the Lu Z phenomenon.......................