I agree with you that it will or should be the mantra of all candidates. I had heard though that the RCA received help from Democratic Party campaign strategists. Perhaps this is one of their current themes and it was adopted by the RCA without any specific anticipation that there were inefficiencies or that waste would actually be found.
A small local entity that can't print money and can't raise taxes without a referenda has less of an opportunity for waste than other taxing bodies - especially when it had already identified that it had a structural deficit.