It occurs to me it's kind of silly that New Zealand has Easter, for the same reason we have Halloween. One is about spring and rebirth, one is about the opposite, or some such.

Obviously Halloween is a little sillier, as Easter has some excuses of Christian ritual.

It's kind of frustrating how dominated by the US/northern hemisphere "western culture" is.

Ultimately it's just capitalism and colonialism, though there is some more social elements that are bleeding over because of the internet's Americanocentricism.
Regardless though, just because we all got conquered by the English doesn't mean we have to be identical.

When I went on my OE in 02016, I was surprised to learn how deeply religious the EU seemed to be, because there were EU-wide Easter holidays (or rather, the week following) that included places we went to like Germany.

And that's something different! That wasn't adopted by NZ! So why couldn't we say, swap some holidays around? Have Easter in November, Christmas in May-June, divorce them from their Christian elements and tie them to polynesian and Maori culture...