...and since employees are adults, no enterprise security or monitoring solutions are needed to ensure they don't misuse their devices, correct?
Just like an enterprise, parents (1)issue devices, (2)are responsible for the safe use of those devices, and (3)have legal obligations to the users of those devices.
Monitoring isn't exclusively because of lack of trust or because you've failed in providing proper training. Monitoring:
1. Makes sure users (children) stay safe online when they inevitably make misinformed decisions (and then create learning moments),
2. Tracks the physical locations of the devices in case of an *emergency*, whether the user is with the device or not, both of which are unfortunately real threats,
3. Captures data in case of a crime that can be used to track the offender and protect the victim.
We teach kids the concept of "trusted adults" that they can confide in and refer to for specific sensitive help; if parents can't extend that same sense of trust to who can monitor them online, that's concerning.