FWIW, Australia had 23 local cases in the last month (an outbreak which resulted in a major city going into a snap lockdown).

Australia and NZ's risk profiles are different from pretty much anywhere else in the world right now. On that level, it's not a particularly reckless move.

That said, I understand the hesitation that a lot of people, particularly from NZ have. Our positions (both NZ and Australia's) have been hard earned, and one major slip up could make it all count for nothing.