It seems like a rare thing to hear (or read) developers and maintainers speak candidly and with humility about things. I absolutely loved mustache.js when it was just a parser and I recommended it to more people than I can count. This is a really nice blog post to read. I wish there were more like it.
Also this article has a bit of allegory to it. I think that if a lot more people would just admit that they don’t know everything we’d start making a lot more progress, more quickly, to benefit everyone.