not really C++20

not really C++20

Compare this with the development and deployment model of languages likes Python and Rust. When Python 3.14 is released, we get the full implementation of Python 3.14, not a "theoretical" half-complete implementation of Python 3.14.

Yes, but you get the downside of that model, too. Python theoretically has a specification, but in practice what matters is what CPython does, not what the specification says. Also, the Python devs have an unfortunate habit of deprecating features that are still widely used, so code that was written a while ago may fail if it's run on a newer version. You win some, you lose some.