The idea that racism can be good is very strange. "I'm going to be racist, but for a good cause" doesn't fit well.
I get the goal was to encourage Tangata Moana to attend, but it is in effect a disincentive to the "allies" because they are being punished.
The fact that there is tiered pricing for other things doesn't excuse this behavior. It turns out that Students/Youth/Elderly are different than Maori/White/Pasifika.