No because there have been laws in place to prevent terrorism that have been used for years. Many people have been convicted and are in prison now and will be for a very long time yet for planning terrorism acts.
Eg cardiff related is lloyd Gunton. Did he harm anyone? Nope. Did he get a life sentence? Yep. Is that controversial? Not really.
https://www.google.com/amp/s/amp.the...st-attack-plot
We are talking about new laws here that have been used to arrest people who may have been about to stand still with a placard. Don't bring terrorism into it to make a point about something else.