The OP and the link provided merely proves, if indeed any proof is required
the absurdity of these 'random' tests.
I wish
Chimbu Chuckles still frequented this site as he had several stories to tell of these situations, one of which was really absurdity writ large!
From memory it concerned some Security scanner who wished to take a Leatherman tool away from him because he might.........
If one uses the search function you might even find his post telling of this event.