No, it proves that one person who knew their written language made a comb.

That is literally all we can say for certain about that artifact. There was a ton of international trade amongst the people around the Mediterranean in the ancient world (and even plenty of trade beyond that).

That we know for certain: https://en.wikipedia.org/wiki/Uluburun_shipwreck

And of course that is only if the person who posted that isn’t full of shit about the comb.