A chimera is a beast that is a combination of other beasts. In this case, a combination of a blog post and a tutorial, and not quite either.

In the Utopian Blog category, we're looking for a point of view. We're looking for strong, unique content that represents your view and your experience in regards to an open source project. There's a bit of that here, but not enough. You concentrated more on the "what" than on the "why."

The post is also highly technical. This is not a flaw, necessarily. However, when writing a highly technical post, you should seek to make it more welcoming to casual readers.

Finally, while I didn't comment on this in the original moderation comment, the post could have been better written. There were multiple issues of style, grammar, and proofreading. Again, this makes the post less welcoming and less fun to read.