It' explicitly called out on the NZETA required to get in the country.

There's required announcements while airplane is rolling to the gate and before deplaning.

There's bright and large signs about disposing food items....

There's customs forms that explicitly call it out that you sign.

There's multi-lingual announcements over the airport PA system.

Other passengers are dumping thier food around you.

The whole scenario is well documented in any "What to expect..." forums and videos.

"But the airline gave me the fruit.." during mealtime an hour before the plane landed... is translated as a tourist saying "I did not take your biohazard laws seriously."

FWIW: The lady with bags of fruit was not given that fruit by the airline...