There's some other fundamental problem if cops and CPS were pulling these stunts anyway. Maybe some better mechanism for recourse against overreach is needed?
First I'd like to know the incidence rate. We tend to see a few specific examples regurgitated repeatedly for several years after they occur, which leads me to suspect that it perhaps doesn't happen that often. This is a nation of 330 million people, after all, so it's unrealistic to expect stupidity will happen zero times.
Having said that, I think the tendency of state agencies, in a political landscape where we regularly justify increased legal intrusiveness into our lives using "think of the children" arguments, to use state power to force our personal cultural prerogatives, and to ask the state to generally solve our problems for us, will be for "stupid" child protective actions to increase over time.
So I applaud the actions to nip this is in the bud... assuming you're right.