Nope- that is incorrect. The NZMF airport scenery is an Orbx product, as printed in black and white during the latest dev stream:
For those of us who have been around flight simulation for a while, it’s clearly a redux of Orbx’s FSX/P3D NZMF scenery package that also includes the Martin’s Bay and Quinton Lodge airstrips that feature in this world update: NZMF Milford Sound Airport - Orbx
Where you are getting confused again is with the texture stretches over the steep terrain nearby the airport. This looked the same prior to the world update, and isn’t affected by the airport scenery which is limited to the static objects placed at ground level around the runway and apron.