Well, OK. My position is that past and ongoing confiscation programs have an abysmally low compliance rate. Past and ongoing prohibition programs have failed to solve the targeted problem and have instead exacerbated it and caused other problems. So they work on almost no one. Things that work on almost no one are least likely to work on those most motivated to overcome them. The sliver of nutjobs whose actions you want to rule us all are those "most motivated" people. Prohibition programs affect them not at all.
Now tell me why you think prohibition programs are effective, especially against those most motivated to circumvent them?