34:11 : A historical discrepancy?

I need help regarding a supposed historical “error”. It is claimed that chain mail armor was produced and utilised by Prophet Dawud AS. The Prophet AS is said to have lived in the 10th century BCE while chain-mail armor was not invented until the 5th century BCE by the Celts. You can read the tafsir of the verse by ibn Kathir along with others [here](https://quranx.com/tafsirs/34.11) . The word in question is ٱلسَّرْدِ (al-sard) which commentators including ibn Abbas RA had interpreted to mean coats made of rings. It is here where the confusion arises. Is this interpretation attributed to the Prophet SAW? If that's the case would it prove the critics' point?