The bottom line as to his detractors, their reason has nothing to do with his abilities, but rather how people will see their inabilities as they have never been seen before.
Yes, this is a MAJOR point that I have been trying to get across to people for a long time. The age-old problem is that once a person takes a hard-and-fast position on just about any issue, it commonly becomes a significant part of one’s personal identity, and thus any attack upon that position is viewed by that person as an attack on himself. Which, of course, is why intense media indoctrination orchestrated by oppressive regimes is so effective. And history is replete with such examples.