Honestly this is one form of activism that seems borderline dumb to me. People who need to encrypt their messages will find the means to do so, and it will always be possible through the internet, at least in its current design. This is not something regular people should be worrying about. The fact that communication is instant on the internet makes the government’s efforts worthless.
Advanced encryption relies heavily on mathematical equations that are impossible to break without a key. That key can exist outside the internet and thus impossible to reach.