I know of a case in a German university where something like that was dealt with quietly and internally.
But your argumentation structure is flawed. It would be better to argue what an organization ought to do and how that is legally and ethically justified than to argue that every organization would call the cops.
I mean your argumentation boils down to your own ignorance (I don’t know of any case ergo it is impossible/improbable) or hand waving that it is obvious. That is not convincing Argument imho even if what you are arguing for is correct. Which I don’t believe just to be clear.
Some sort of super community that are searchable (i.e. not something Clientside) and span multiple servers. The fragmentation of having the same few communities everywhere is my biggest issue here.
In general I want more and better discoverability of communities anywhere.