Why? I mean, what benefit does gil-lessness provide now that there is asynchronicity all over the place? Preemptive multithreading is a giant and endless source of bugs and most of the time you can just use some faster language if speed is truly what you need.
Years ago I wrote a rust program (pre 1.0) that linked to a python library that a co-worker wrote. We got deadlocks. Turns out we also were linking the system OpenSSL which internally uses python to deal with ca-certificates and the GIL was the culprit. So that's a why.
