There are probably not too many people that would disagree with him. Iceland President Guðni Th. Jóhannesson told a crowd that he would ban pineapple as a pizza topping if he could. The president was visiting a school where he told the students that if he could pass laws on his own that he would ban pineapple from being a pizza topping.
If you are wondering about Hawaiian Pizza. It appears to be a Canadian thing. Sam Panopoulos claims that he created the first Hawaiian pizza at the Satellite Restaurant in Chatham, Ontario, Canada in 1962. Some people get mixed up and call this a Canadian but a Canadian is pepperoni, bacon and mushroom.
Just as an update. The Pizza Topping War has taken on a new front. We might have to join this fight.
The Pineapple Pizza war took another strange turn over the weekend. Let hope that this gets retired soon.