Well the thing is I'm a vegetarian and I always get crap for it because apparently they knew this one vegetarian who was preachy. But in all my years I've never met a single preachy vegetarian, so I always figure these horror stories about people getting upset over silly things are second hand regurgitation of a non-existent menace.
Not to mention that if your so called source is an internet encounter there is nothing to keep the person from just being a poser specifically being an ass out of some prejudice and hoping to convert a few more people.
#Poe's Law