Really? Do you really think everyone who comes off as irrational based on a blog post of theirs that you read shouldn't be here? (There would be nobody left for you to talk to!) Or are you annoyed at this particular person because they said mean things about a group that contains you?
"This is what motivated cognition looks like. If someone cannot take criticism of their in-group without launching an ad-hominem attack on the critic, then they should not be in a rationalist community."
That sword cuts both ways.
Really? Do you really think everyone who comes off as irrational based on a blog post of theirs that you read shouldn't be here?
There's irrationality and then there's faith-based epistemic insanity. This person actually states that he cannot accept any perceived challenge to their preferred theories. Seriously, read the blogpost. He/she is as rational as the most extreme Christian fundamentalist. Do you really think such folks could ever be productive contributors to this site?
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.