There are various countries in Africa where a majority of the population thinks that it's a good idea to punish homosexuality with death.
If you want diversity in moral opinions than you should create an environment where someone from such a country can freely talk about his morality.
I have a much better understanding of the moral position of a third wave feminist than I have and understanding of the position of someone with mainstream Ugandian morality.
I think I understand the third wave feminist even better than someone from China.
If you would want to someone represent the majority of humanity it makes much more sense to specifically write post arguing conversative positions that appeal to the majority of the world population than to try to be more accommodating to social justice warriors as there aren't that many social justice warriors in the world.
But I wouldn't advocate going down that road but instead advocate that people focus on the quality of arguments.
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.