Comment by mduncs

Hawaiian is primarily used as an ethnonym, so saying the Aloha shirt is a 'Hawaiian Shirt' is implying the shirt as part of native Hawaiian culture. What you say is technically true at a certain level, people who live in Hawaii do have the demonym of 'Hawaiian', but that term is reserved for the indigenous Polynesian people of Hawaii. It would seem odd to say for someone to say they enjoy native American food as a means of expressing their like of hamburgers and french fries.