You're wrong.
First, about the consequences: the theatrics of the "unspeakable" are getting a little tiresome. Shalizi is a statistics professor at Carnegie-Mellon. The Mainstream Science on Intelligence was signed by 52 professors and included very clear statements about interracial IQ differences, lack of culture bias, and explicit heritability estimates. I would ask you to name the supposedly inescapable and grave "consequences for career and social life" these 52 professors brought on their heads.
Second, about the subject matter: this quote comes at the end of a long post in which Shalizi challenges the accepted estimates of IQ heritability, and criticizes at length the frequent but confused interpretation of heritability as lack of malleability. In his next post on the subject, he criticizes the notion of a single g factor as standing on a shaky ground, having been inferred by intelligence researchers on the basis of factor analysis that is known to statisticians to be inadequate for such a conclusion. Basically, Shalizi criticizes the statistical foundations employed by IQ researchers as being statistically unsound, and he carries out this critique on a much deeper technical level than what normally makes it into summaries, popular books and blog posts. On the face of it, this isn't a completely ridiculous idea: we know that much of psychology and medicine routinely misuses statistics in ways that make experts wince, although we might also expect IQ researchers to have their statistical shit together much more decisively than your average soft-psychology paper.
There have been replies to Shalizi's critique on the same technical level, and further debates. Frankly, most of this goes over my head. I know just about enough basic statistics to understand most of Shalizi's critique but not assess it intelligently on my own, and certainly not to follow the ensuing debate. I doubt, however, that your dismissal of Shalizi's honesty is based on a solid understanding of the arguments in this debate about statistical foundations of IQ research.
You're wrong.
That flat and unconditional statement seems to be mismatched with your sentence a bit later:
Frankly, most of this goes over my head.
Given that you say you lack the capability to "assess it intelligently on my own" and given that I don't see the basis on which you decide I am statistically incompetent, I am rather curious why did you decide that I am wrong. Especially given that I was talking about my personal conclusions and not stating a falsifiable fact about reality.
P.S. Oh, and the bit about consequences for career? Try Bl...
A long blog post explains why the author, a feminist, is not comfortable with the rationalist community despite thinking it is "super cool and interesting". It's directed specifically at Yvain, but it's probably general enough to be of some interest here.
http://apophemi.wordpress.com/2014/01/04/why-im-not-on-the-rationalist-masterlist/
I'm not sure if I can summarize this fairly but the main thrust seems to be that we are overly willing to entertain offensive/taboo/hurtful ideas and this drives off many types of people. Here's a quote:
The author perceives a link between LW type open discourse and danger to minority groups. I'm not sure whether that's true or not. Take race. Many LWers are willing to entertain ideas about the existence and possible importance of average group differences in psychological traits. So, maybe LWers are racists. But they're racists who continually obsess over optimizing their philanthropic contributions to African charities. So, maybe not racists in a dangerous way?
An overly rosy view, perhaps, and I don't want to deny the reality of the blogger's experience. Clearly, the person is intelligent and attracted to some aspects of LW discourse while turned off by other aspects.