Re: Maybe a silly question, but...
Same question here.
I also don't know how people might be singled out for race, maybe by their name? But then again, that's why I have an online handle - you don't need to share it.
I personally haven't seen anything on the site that I would take to be racist or sexist - it's a technical site, and that's pretty much all that is there - technical answers.
At the risk of angering some people, I wonder how much of this is people having a persecution complex?
If you actually read the blog post, it starts by mentioning women, races and new visitors. The vast majority (~99%) of the post is tailored to that last group - the need to make it more welcoming for new users etc. Its notable that the post doesn't talk at all about reducing gender beyond that first paragraph, and 'race' is touched on in a comment about imperfect English.
So I'm wondering if their view is similar to mine - that improvements can be done, but some people just want to play the gender/race card even when the real issue is more universal?