VERY interesting find - ThankQ for posting - I caught one poster on that thread commented to the effect there’s not much known about Jesus and I commented that was rather ironic on a post about a 1750 year old artifact was discovered. WWG1WGA + Maranatha! :)
The consensus within biblical scholarship, although not universal, is that the Old Testament of the Peshitta was translated into Syriac from Biblical Hebrew, probably in the 2nd century AD, and that the New Testament of the Peshitta was translated from the Greek, probably in the early 5th century. . . . A statement by Eusebius that Hegesippus "made some quotations from the Gospel according to the Hebrews and from the Syriac Gospel," means we should have a reference to a Syriac New Testament as early as 160–180 AD, the time of that Hebrew Christian writer.
If I understand the report on this palimpsest copy, it would date to about 200 - 240AD. It is not a complete NT text.
I tend to believe that we have the text today that the Lord wants for our age. 'Perfect understanding' may well come at a later, more needful time.