Evolution in religion happens when political, technological or military changes take place. And the area was ready for some evolution in religion. What seems to be happening is people are rejecting the faith based Jesus and that’s the only Jesus they understand. If it is not in the bible, then “it did not happen” way of thinking. Then yes, it is possible Jesus did not exist. On the political side, outside of the bible it can get muddy. You have Jesus who was killed by his bother John in the temple that was talked about by the people a lot.
Then you have the high priest who didn’t like to be confused with the other Jesus’s, so he changed his name to Jason. You have Jesus, the son of Phabet. And Jesus, son of Sie. Jesus, son of Damneus. Jesus, son of Gamaliel. Jesus, son of Josadek. Jesus, son of Fabus. Jesus, son of Danmetas. Jesus, son of Sapphias. Jesus, son of Shaphat. Jesus, son of Gamalas. Jesus, son of Ananus. These Jesus’s seemed to get recorded in the history of the time for various religion reasons.
Of course, we want the data about Jesus of Nazareth. And why would they or anybody at that time want to change what he did in history or get rid of the pathway Jesus was building? That is a really simple question. Jesus was an atheist, as was many of the Gnostic teachings. He believed in religion, but not deities. God to Jesus was “knowledge” as in religions out of India. But Jesus could not step directly Gnostic teaching, the people were not ready. It had to be a well thought out approach. And being in the top political office of religion in the area was maybe the only way it could happen. So, did Jesus run for political office. I bet you will be reading more in this area in the following years. Only a few of the Gnostic teaching survived. And those Gnostic books are new to the religious world.