Maybe it's not that people are stupid, it's that people all over the world are truly miss informed. It wasn't until I got into knife making and read the safety threads here that I realized the dangers of zinc coatings.
I have been a body man for 13 years and have welded a lot of galvanized body parts. Did they teach us the dangers if zinc in school? Nope!!! Practically every car made is galvanized and they are being welded every day by people that don't know the dangers of metal poisoning.