Allowing the relevant authorities to control, shut down and arrest serious crimes doesn't turn a country into a surveillance state.
Poor surveillance controls do though - let's perhaps fix those instead of allowing garbage like Flock to spread and then hand wring? EU started with GDPR, let's see others follow and build on it?
Who gets to decide which crimes are serious enough to warrant the types of actions being advocated for? Who is going to implement and regulate such controls? Our governments have shown their willingness to violate those controls any time they see fit and are not held to account. Do you honestly believe that you could never end up on the bad side of that deal?