The English language is like a river. It changes and adapts in time and because of it's location. Who is to say 'lent' and 'borrowed' won't be universally interchangeable in the future? Who says people who flout the 'rules' aren't some kind of leaders in language adaptation. Nobody owns language, so nobody can appoint themselves as language police. People with OCD and types of autism are exempt as, I understand, irregularities might make their brains itch.