> Nope. Criminals can still just build their own devices

Haha sure. You over-estimate many of them. Not everyone breaking the law is a professional criminal. Especially when it comes to CSAM.

> Legally you can't stop anybody from using encrypted channels if they are motivate unless you go out and erase the knowledge.

ChatControl doesn't pretend to do this: they pretend to control mainstream social media, whether encrypted or not.

> It would be perfect to target small movements as they are emerging for example.

Yes, this is my problem with ChatControl: it's a powerful tool of surveillance that would be very dangerous if abused. We don't want to create that.

But "it's useless because criminals will compile their own kernel anyway" is an invalid argument. It doesn't help the cause.