I mean, this is just begging the question. Many people disagree with this and disagree with the notion that humans are innately valuable. The blog post just seems like a lot of copium from somebody who really hopes he’s right.
Citing Genesis and an Encyclical might strengthen one’s argument for a particular demographic, but for many it will simply be unconvincing.
Like citation sources, no doubt some humans are valuable but whether they are or not is often relative.