I encourage you to submit counterexamples. I'm about to get on a plane, though, I'll have to present my counterargument in a few hours.
The article contains counterexamples. You can start from those if you really think they're not reasonable (i.e. the answer is never)
The pilot's opinions are a perfectly good example, must communities shun that airline as religiously impure if an individual pilot disagrees in any way with current authoritarian enforced doctrine?