In the absence of knowledge, you can guess or you can use the default ("they"). There are a few ways to read mpfundstein's post, and I was responding to those

In the absence of knowledge, you can guess or you can use the default ("they"). There are a few ways to read mpfundstein's post, and I was responding to those on the more charitable end, such as "I personally know the author, who goes by 'he'" or "'Austin' is clearly a dude's name".