Flyboat, your definition of engineer is quite narrow. A professional that holds an engineering degree or similar qualification is just one form of engineer. Not sure how old you are, but aircraft used to have flight engineers. Old locomotives were operated by engineers. Members of the Royal Corps of Engineers - sappers - are engineers. Are you going to notify the Queen that she is wrong calling her soldiers engineers?
The term 'engineer' has a long history as a term to describe a technical trade. Stating that only someone with an engineering degree can call themselves an engineer is wrong.