I agree. And I think this fits the overall pattern of the four Gospels: the later the Gospel was written, the more grandiose the claims about Jesus.In the book of John it's pretty obvious that the author is saying that Jesus is God.
In the oldest Gospel, Mark, Jesus is described as sent by God and he does only a few miracles, mostly in private, and he tells people to keep them secret. The original version is even missing the Resurrection: in the oldest manuscripts, Mark ends with the tomb empty, Jesus's body just missing, and his followers confused and afraid.
Over the course of several decades, by the time we get to the Gospel of John, the story has snowballed: now Jesus is performing miracles in front of huge crowds and he isn't just sent by God; he *is* God.
FWIW, I see this pattern as supporting the existence of a historical Jesus. I do think it's telling that the Biblical authors waited until all the eyewitnesses would have beem dead to start making truly outlandish claims about him. If he was purely fictional, there would have been no need to wait.