In this particular case it is obviously evil and misguided. There is no "iron wall" around EU phones or EU computers, a criminal can install literally anything on their PC and almost anything on their phones. So the real actual criminal won't be affected by the change at all, they will use software without backdoors for their shady stuff. This is obvious to everyone really, so this leads to a conclusion that the real reason for the enforced breaking of encryption is to spy on the political opposition, on the business competitors and in general promote a healthy fear and paranoia in society. Just what we need, in the age when EU enemies are acquiring more and more collaborators and tools inside EU, to disrupt and hopefully destroy the union.