Yeah, rational thinking at work.
By the same logic that makes most of us more afraid of terrorism than of crossing the street, we assume that adult strangers are usually serial killers.
Here, we have an anecdote about a minor allowing himself to be straightjacketed by an adult stranger. So, when the evil stranger in the story turns out to be exactly as harmless as he claimed to be, that somehow doesn’t fit with our assumption.
If we were rational beings, we’d have to modify our assumptions slightly. But fortunately, we’re human, so we can use this anecdote for a nice article about the dangers of serial killers.
I bet that for more then half of the people who read this, their irrational fear of strangers will have been strengthened rather than weakened.