The problems you're describing, or seeing solved with uv, don't seem to be about a problem with the design of virtual environments. (Uv still uses them.) They're about not having the paradigm of making a venv transiently, as part of the code invocation; or they're about not having a built-in automation of a common sequence of steps. But you can do that just as well with a couple lines of Bash.
I'm not writing any of this to praise the standard tooling. I'm doing it because the criticisms I see most commonly are inaccurate. In particular, I'm doing it to push back against the idea that a non-Python language is required to make functional Python tooling. There isn't a good conceptual reason for that.
