Luxon's inexperience costs him international power play

[harm_less]

From within that Stuff article:
"It’s not yet clear what the new government’s position will be on the use of Te Reo Māori by government departments because it’s not yet been formed."

You need to start analysing and comprehending what you're reading.

So why do they care so much on removing it beforehand?

Very few people know how much pandering to the various party's support bases and policies is happening within the coalition negotiations. All will be revealed when Luxon eventually announces what sort of partnership he's managed to stitch together with Winnie and Seymour, and then the reality of the situation will dawn on the electorate.