It is what it is, I had never heard or read about it, but that doesn't mean that nobody ever got in trouble. Heck, some people manage to get fined for carrying prescription drugs they bring along from their home country.
I wasn't aware of that thread that is almost 7 years old. I note that it was started by someone (LMTU) who had a certain reputation and that nobody else corroborated to his story, so it might or might not be fictional.