There are some interesting things in this article, if you want to pick through it.
It seems strange that Matthew could pick on Isaiah 7:14, to prove that Jesus had a virgin birth, if details about his real birth were known. Jesus isn't just a virgin, he comes out of nowhere, at age 30. If he had an infancy, his childhood would have also been divine, and notable. We would have had a 3 year old Jesus, preaching to the Rabbis, and being authoritative before any child could even read. Then, it would have been much harder for a Roman to crucify a 4 year old.
A problem arises: why did the writers make Jesus 32 when he was killed? Was it just because someone wrote the narrative of Pilate, and that was fixed, and then someone else wrote some narrative that fixed his time of birth according to prophecy?