Ironic that a post about Threads backend is hosted on twitter.

If you want real irony here, it's this: powering an app called Threads with Python that's got a global interpreter lock which makes threading hard.

Get it? Threads, threading...? OK, I'll see myself out.

Meta does have their own higher-performance JIT-compiled implementation of Python, but I don't know if it still uses a global interpreter lock.

... wait, what? Did this morph out of HHVM? Any links on this?

Click on the link, it's linked inside.

Seems to be behind login.