This thread would make ideal research material for a future thesis for someone to try: "Social attitudes to mental illness in the Britain of 2015".
Also, if person A says or writes a combination of words and persons B, C, D and myself perfeive a meaning, in those words, other than was intended then surely the communication difficulty lies with person A?
Mysteriously, person S comprehended the initial word combination perfectly and couldn't wait to tell everybody how stupid they thought the ones (the majority), who misunderstood the meaning, were.
"Some people here are so gullible, they should volunteer for Samaritans." implies that gullibility is the ideal qualification for the job.
That idea has time to sink in ("leaving an impression") before the follow up about it broadening their experience. Inserting the word "because" before the second section would have prevented most readers from forming an impression until they'd reached the end of the sentence.
Now, grammar never brought any criminals to justice and Retrocop is retired so there's nothing in it for him in picking up new tricks.
All I will say is that clear communication and attention paid to ensuring no ambiguity saves *everybody* a lot of misunderstanding, heated debate, stress, anger and, above all, typing.