I go to Italy often just to eat real Italian food. I understand that for Italians, the hawainana pizza is an aberration, like many other things if not cooked as they traditionally do. And I respect it, because it's a key part of their culture. Still, I have a right to eat and like whatever I want, so I also expect respect on that sense. Some people will do this and some others won't. I think it's a personal choice to decide respecting others opinions.
I also discovered a while ago the amazing arrival of pinneaples to Europe, back then they were so rare and expensive that there were companies providing rental services for pinneaples. Rich people would host a pinneaples party, to basically show it, and then to be returned to the company that rented it. Crazy pinneaple times indeed!