It was all a designed to create more surveillance, not to protect us. I don’t think it’s stopped any terrorist attacks.

I’d normally agree except the copy cat effect is strong these days. School shootings in US are the counter example where little changed after Columbine and now we have them weekly or so.

We don't have Columbine-style school shootings every week. Maybe gang shootings involving students, but that's a separate problem with completely different cultural roots.