No this isn't ok. Put aside one area of academic theory and discuss facts. Millions of people  in the USA and world will create an idea of Polynesians based on simplistic Disney Character archetypes. The characters shown already in trailers and promotional material do offense and this needs to be acknowledged. Telling Polynesians to not take offence is not ok. Positing some academic theory spent make your point any more valid, it simply supports a lack of empathy for real people.