Clinton,
You have correctly identified that the problem is noble cause corruption.
Once suffering from it a person may then be corrupt in other ways or the organisation operating under this culture is then vulnerable to a few bad actors within it.
The problem isn't confined to CASA, in RAAus to some extent and particularly GFA, the problem of noble cause corruption is embedded in the culture of the organisation.
It can result in unnecessary expense, very poor safety outcomes and bullying and vicious persecution of individuals and small groups within the organisation, made worse by the compulsory membership of the bodies which prevents the operation of market forces by people being able to walk away.
Part 149 will make this worse next year when implemented.