Encryption is not a crime, encryption protects all of us. Encryption, and especially end-to-end encryption, is an essential tool to protect everyone online. Attempts to undermine encryption are an attack to our fundamental right to privacy and an attack to our inherent right to security and safety.
Thats why it would have to be a closed system with controlled transmissions rather than omnidirectional radio transmissions.
You mean, for everyone to have their own infrastructure, many times what we have now, and still some jerk can literally wiretap like in old times?
Or send messengers?