It is not the case, necessarily, that the children`s workforce believe they are doing their best and are shocked that parents take a different point of view. Many of them are parents themselves. When they discussed Curriculum for Excellence, mature teachers in particular, were very negative in the Tes forums about GIRFEC and all the rest, and could see right through it. Over time their preoccupations have changed. Worries are more about how to implement these changes. When your job depends on it and you have a mortgage people tend to acquiesce.
I would suggest that those in power want to maintain their grip. The Named Person has been put in place to get the data and so the idea of the autonomous individual and privacy rights had to be undermined. Risk culture can do that. Computing power and big data analytics are at an advanced stage. So the time was right.