Context: Chat Control 2.0: EU governments set to approve the end of private messaging and secure encryption
"By making a minor concession EU governments hope to find a majority next week to approve the controversial 'chat control' bill. According to the proposed child sexual abuse regulation (CSAR), providers of messengers, e-mail and chat services would be forced to automatically search all private messages and photos for suspicious content and report it to the EU. To find a majority for this unprecedented mass surveillance, the EU Council Presidency proposed Tuesday that the scanners would initially search for previously classified CSAM only, and even less reliable technology to classify unknown imagery or conversations would be reserved to a later stage. The proposed βdealβ will be discussed by ambassadors tomorrow and could be adopted by ministers next week."
They can't. It's unenforceable.
I'd imagine if, say Signal, refuses to comply and gets banned from the EU, one could always use a VPN. I think that nothing short of either a full global ban or implementing a version of The Great Wall of China would allow these ridiculous laws to be enforced. Even then, there will always be ways around it for those willing to go the extra mile.
Why not just go for Tox or some other P2P serverless communication system? They can't ban / go after a system that has no central servers, can they?