tla100

Others implement and improve, he gets all the credit. This is why no famous JIT designer would touch CPython.

What track record does GvR have in terms of speeding up CPython? He did not care for 3 decades (which is a defensible position given C extensions) and has been literally called "the boat anchor" by another HN member many times.

Mypy was Jukka Lehtosalo's work, asyncio was fixed and extended by many.

So now he needs a project at Microsoft, he changed his mind (or had it changed under pressure) and this is the project. We'll see, I agree though that the first version will be underwhelming, the following versions will have a max speedup of 50% but will be celebrated at conferences and here.