I was hearing recently that one way to upset a Dutchman is to refer to The Netherlands as Holland. Holland is a province in The Netherlands. It is like calling the USA Arizona.
It is not appropriate to judge the actions of people who lived 200+ years ago by the current societal norms. What will your great-grandchildren think about your driving a car or owning a pet?
So, where are this guy’s diplomas from? Obedience school?