The EU delegates stuff to the member states, those states
enforce laws, that could in principal include requiring everything up from the physical link layer to scan for watever they say so.
> Especially as perfect encryption is indistinguishable from noise.
Irrelevant. If powers can't decrypt it, powers deem it a crime to have or send.
"white-noise.wav is a test file and I'm an acoustics engineer": tough, supply the seed to the PRNG which created it or fine time.
> policy/economic problem instead
Instead? Everything about this is about groups wanting to act in secret for their best interests, and other people wanting to ensure that only the interests they share get to do that. This is true when it's me logging into my bank and criminals trying to get access to the same, when it's the Russian government sponsoring arson attacks in Europe and local police trying to stop them, and when it's the CIA promoting Tor for democracy activists in dictatorships and those dictatorships trying to stop them.
We must have unbreakable encryption, and yet also we cannot have it.