It is always a mistake to assume the opponent is ignorant or stupid. Of course the government knows the futility of trying to enforce the use of only "approved"

It is always a mistake to assume the opponent is ignorant or stupid. Of course the government knows the futility of trying to enforce the use of only "approved" encryption. A law that required the use of "approved" encryption necessarily bans real encryption tools. Anybody that is actually secure is made a criminal, which is one more law that can be enforced arbitrary if someone decides you are a problem. It should be fairly easy to filter for non-approved encryption with DPI. This gives them a nice map of all the "subversives" that are trying to evade the "monitoring and controlling of casual citizens".