This is my opinion... but yes, i'd agree taking environmental design does not fit well into the entertainment aspect of things. It's not the same sort of 'environments' as you are thinking of in terms of sets, matte paintings, etc. They're approach is very 3D oriented with little emphasis on practical drawing or painting skills. To my untrained outside observance, the program seems to be sort of a trumped up interior and exterior design program that encourages the changing of physical spaces by engineering the spaces themselves and the elements within them. Its architecture meets interior design. Its sort of odd.
Product/trans or Illustration will give you more of the actual foundation for entertainment through, most importantly, drawing.