I think the problem arises if we think that high intelligence (by our measurement!) is an essential element of Jesus's mission.
The author contends, for instance, that Jesus's miracles of healing required high intelligence to "repair" cells and so on ... and yet we know from the Bible, as well as other history, that the apostles performed miraculous healings and raised the dead. The prophet Elijah experienced miraculous multiplication of food and manipulation of the weather. They can't all have had the highest IQ ever!
I agree.
To give the author a break, maybe he’s using a different definition of intelligence than I am.
On the other hand, I don’t think that healing the man born blind had anything to do with ability to do calculus, manipulate words, solve IQ puzzles, or engage in deep philosophical discussion.