The grand parent comment probably made the same mistake because there isn't any country where the mean mother age at first birth is 32 or 33, that is, 6 years more than US 26.3 or 26.9 (depending on sources).

Yes, indeed I took the average age of the mother of any birth and not the average age for the birth of the First child.

Official Italian ISTAT report for claims 31.1 for mother age at first birth. Still significantly higher than US fwiw.