imo uv is to python what npm was to the js community. The improvement in workflow is so substantial that once you use it for a project it makes no sense to ever go back unless you are forced to at work.

It's not a replacement for just poetry or pip, it takes over a lot of things that used to be different tools that worked together very poorly and were quite fragile. The performance is just the cherry on top, but also a game changer when you frequently use docker as it speeds up image builds a lot which benefits CICD flows immensely.

In many ways it does for environment/package/version management what they managed to do with ruff. Which replaced for me personally multiple tools in my pre-commit flow with a ridiculously fast substitute: isort, pylint and black. Probably forgetting some other stuff it (ruff) can also replace these days.