Of all the arguments presented I'm surprised to see absent the one that seems most obvious to me: encryption is just math, there's no way to actually ban it. If criminals think their conversations are going to be detected they aren't going to just say "oh well let's not crime now". They are going to simply spin up their own e2e encrypted channels. The software is nearly trivial, the technical barriers are very low - it's hard to think why it won't happen.
So then what? They start outlawing encryption altogether? knowledge of math? How would you claw back all the public and freely available software that people can already use to encrypt messages to each other?
So then what? They start outlawing encryption altogether? knowledge of math? How would you claw back all the public and freely available software that people can already use to encrypt messages to each other?