The destructive symbiosis between paranoid bureaucracy and commercial abuse of data is the biggest threat to digital society.
Approaches such as this is really about control with little or no legitimate needs.
The claim that that police needs to be able to do hidden surveillance and wiretapping need justification. There is little problem technically in what we can call visible requirements of specific surveillance and wiretapping (e.g. convicted criminals), all the problems occur because of requirements of backdoors that cannot be protected and gets systemically abused.
Why should out children not have the abolity to create peer-to-peer groups without centralised surveillance and commercial abuse of data? You can validate non-invasive that they belonging to the same group e.g. a school class and you can require e.g. two independant moderators. But why more?