I am not surprised. I ran into something similar at the courthouse in Calgary several months ago. Access to the coutrooms involves going through a metal detector and emptying one’s pockets. I had forgotten that I had a small, mini-Swiss Army knife, a promotional item. I contained a 1 1/2” blade and a 1 1/2” nail file. They confiscated this without the option of returning it. I asked about keeping the plastic toothpick, but was told it was a sharp object, so I was SOL. What they did not seem to understand was that the two pens that I had in my pocket could do more damage than a 1 1/2” penknife blade!
Where do you think the “lot of 25 pocket knives” on ebay come from?