> I still don't get what was so wrong about venv that anyone needed uv.

Pip is slow, far slower than it needs to be in almost everything that it does, regardless of being written in Python. It's "standard" but not part of the standard library (so that it can be developed independently), and was never designed to install cross-environment properly (the current best approach, since 22.3, is a hack that incurs a significant delay and expects everyone to move in lock-step with the CPython EOL schedule). It wastes disk space, both by re-copying packages into new environments (rather than hard-linking them as uv does) and by spawning copies of itself in those environments (the original work-around to avoid needing cross-environment installation support, which a few people have also come to rely on in other ways).

> If it is so good, ok, i get it, it might be - and all that good stuff needs to go back to python as python.

I like these threads because they encourage me to work on my main project.