Yes, I think you were over-reacting.

What exactly would it have taken to put your mind at rest?

The captain personally coming back and talking to the pax? What did you think the captain was going to do/say that the FA hadn't?

Did you want the FA/captain to demand to see the clippers? Search the pax bag?

Would you have felt safer if the pax with the clippers had been deplaned?

Would you have felt better if all pax had been removed, the airplane searched, and all pax rescreened?