Former United States ambassador to the UN Samantha Power: "I cannot stress how much the @UN - and the governments that comprise it - need this."
Of course, Ardern has the benefit of partner Clarke Gayford as a stay-at-home, or travel-alongside, dad. If Ardern is a poster girl for working mums, Gayford is surely the pin-up of primary caregiver fathers. In fact, despite being regularly pilloried by New Zealand lobby group Family First and other "family values" outfits, our "first family" look like great role models for the family unit.
As Ardern would be quick to acknowledge, the support from her partner is invaluable and many are doing it tough without that support. "Young mum looks after baby as she gets on with her job" is also the story of solo mothers, but it's one that would barely cause a ripple among the world's media.
And then there's the solo dads - they're largely invisible.
Still, well done to our PM for making the ordinary seem extraordinary last week.
What next? A member of the royal family closing a car door?