They take everything FLOSS and ruin it with bureaucracy, churn, breakage, and inconsideration to external use. They may claim FOSS broadly but it's mostly FOSS-washed, unusable garbage except for a few popular things.

React, PyTorch, and RocksDB are all extremely significant. Not to mention them being one of the biggest contributors to the Linux kernel.

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.

But I'd like to know exactly what that means.

How can I find out if Facebook's focus is aligned with my own needs?

Now: Benchmarks :) Long term: you can look at the past and guess