It is hard to see the point of a GIL removal that will destabilize the C extension ecosystem for probably a decade again:

C extensions can already start as many threads as they like. Threaded pure Python, even if GIL-less, is still slow, so what is the point?

The whole point of Python (before asyncio, pattern matching etc.) was being simple and having a nice C interface. If that continues to erode, people will (and should) look at other languages. C++ for example is pretty Pythonic these days, Java does not have these problems, Erlang (while slow) was written for concurrency from scratch, etc.