Though there are many brilliant people within academia, there is also shortsightedness and group-think within academia which could have led the academic establishment to ignore important issues concerning safety of advanced future technologies.

I've seen very little (if anything) in the way of careful rebuttals of SIAI's views from the academic establishment. As such, I don't think that there's strong evidence against SIAI's claims. At the same time, I have the impression that SIAI has not done enough to solicit feedback from the academic establishment.

John Baez will be posting an interview with Eliezer sometime soon. It should be informative to see the back and forth between the two of them.

Concerning the apparent group think on Less Wrong: something relevant that I've learned over the past few months is that some of the vocal SIAI supporters on LW express views that are quite unrepresentative of those of the SIAI staff. I initially misjudged SIAI on account of past unawareness of this point.

I believe that if you're going to express doubts and/or criticism about LW and/or SIAI you should take the time and energy to express these carefully and diplomatically. Expressing unclear or inflammatory doubts and/or criticism is conducive to being rejected out of hand. I agree with Anna's comment here.