He got a huge amount of criticisms and negative comments from the community while he was working on this on GitHub; look at the comment thread of his implementation on GitHub. Essentially the community was telling him "we don't want this". And who are you working for in a FOSS project, if not for the community? Yet he disregarded the comments and went on.
On top of this, he appeared out of the blue with this implementation. He had not made any pull requests to this git before now. Nobody had assigned this task to him.
So the situation is not that this is some employee who was asked to implement something, and did it without knowing what the feedback would have been.