Forgive me if this is an obvious stupid question, but with all this talk (again) about the EU trying to force chat platforms to check the content of its messages, I can help but think: how are they ever going to prevent me and my friend from sharing public keys and using them to encrypt our messages to each other? In other words: how are they ever going to be able to ban encryption?
They can’t stop you. But they can criminalize your behavior.
It becomes yet another tool in the toolbox, if you become a person of interest, the tool comes out and they start hitting you with it.
The fact that it’s impossible to implement isn’t important.