As described in the article, Jest is no longer run by Meta and its primary maintainers don’t work there.

I also would argue Jest development slowed down after Meta transferred the project to OpenJS, so…

> Please don't comment on whether someone read an article.

https://news.ycombinator.com/newsguidelines.html

A rotten apple doesn't roll far from the tree. The vast majority of Meta projects and former projects are garbage. If you need to ask why, because it's experience.