This is a very common complaint, and it's not valid. You cannot have privacy without some form of trust or identity. There's no reason that "Only $KEY can read

This is a very common complaint, and it's not valid. You cannot have privacy without some form of trust or identity. There's no reason that "Only $KEY can read this" and "$KEY belongs to $READ_WORLD_ENTITY" have to be tightly coupled. Just because you need [the network operator to think you have] some form of the latter, does not in any way mean that the former is "not valid" unless it has one particular form of it baked in. Tight coupling is evil (ref. dependency injection), and complaining about it is not in any way not valid.