It would sound doper with only the Maori folks doing it
You have to approach this reflexively otherwise you risk overlooking the agency of Maori people in the matter. After all, the ethics of cultural appropriation boils down to who is in control.
The dance is never done if there are no Maori people on the team. A person of Maori descent always leads the chant, the NZ Government handed intellectual property rights over the dance to the Maori people, the vast majority of whom are happy to see their culture enacted with dignity on the world stage.
Of course this doesn't address legacies of Maori abuse and mistreatment but this is one of the rare occasions where pre-existing culture has been able to mesh with nationalistic sentiment without exploitation.