I guess we're digressing, but I don't think the US introduced urinals. And I fail to see how talking in elevators is incompatible with being a prude (or is there some subtle sexual innuendo that's flying over my head here?)
It's social engineering. Even I felt uneasy seeing how the author was able to take usernames. However, this isn't very different from other white/black-hat hackers getting into others' accounts by simply contacting support and providing minimal proof.
I don't think they believe it either. It's just easier to treat people as criminals by default. Why go through the effort of engineering things properly when you can have 10+ cops break down your door and shoot your dog?