Hmmm...rather an interesting article and I'll have to study it more. But it seems, as even the author acknowledges, it's based on speculation. At best the author says Jesus knew Aramaic and
could have spoken in Greek. The author avoids discussing Hebrew which I find a little troublesome since much of our Lord's ministry was to the Jews. Sitting with the elders discussing text would require some knowledge and conversing in Hebrew.
I don't wish to downplay your article because it is extremely interesting.