The point of the blog post is that repo is over-focused on Facebook's needs instead of "general utility":

> as a result of recent changes within Meta we no longer have anyone shepherding long-term jemalloc development with an eye toward general utility

> we reached a sad end for jemalloc in the hands of Facebook/Meta

> Meta’s needs stopped aligning well with those of external uses some time ago, and they are better off doing their own thing.