Congrats on earning the Captain Obvious achievement!
Some people are reading the title of the post as if GitHub had received proposals from their employees to include some of these achivements into the final feature set, and then decided to reject them, but the reality is that none of them were proposed by any GitHub employee at all. They are all “joke submissions” from the development community, making fun of the gamification of the platform.
Pointing out something obvious, then having someone else point out that what you pointed out is obvious, then defending the obvious thing that you pointed out by stating that it in fact is not obvious