"They suffer from insecurity, jealousy"....etc.? Sorry, but you don't even know the person, how can you know what motivates him to be unkind. He probably is insensitive, plain and simple, or perhaps he's a generally sensitive person who was having a bad day. In the meantime, his unkind remark has generated a whole lot of conversation. And I think this conversation reveals a lot more about us than the person who made the initial remark: it reveals that we want to be noticed, and it hurts our feelings when we are noticed in a negative manner. So who's insecure?