> any bit of criticism about his language

I'm not even sure that it's criticism. I read it as a genuine open question.

At least in my experience, asking questions like this through GitHub issues or a mailing list are met with negativity. I don't want to post through a channel where I'll get a snide, terse response from a maintainer. I'd much rather post to my blog audience, who I find to be generally knowledgeable and friendly enough to already be following me. And if I found an answer, I'd post about it and explain what I learned in the process, linking from the existing post.

In a lot of ways, I think Andrew's response is exactly the sort of flavor of reply that I would have expected no matter what channel the question had been posed through, and that's exactly why I wouldn't have gone through those channels if I was the author. His reply didn't answer the question aside from implying it's maybe an issue, nor did it invite feedback.