A nice part of this setup is that it keeps the project workflow consistent. Having uv handle the environment and commands means you don’t have to remember which tool should be run through which virtual environment or package manager.
I also like the separation of responsibilities: the formatter keeps the code style consistent, the linter catches common issues, mypy adds another layer of checking, and tests verify the actual behaviour. None of these replaces the others, so having them work together is useful.
The biggest benefit is probably reducing setup decisions for future projects. Once the configuration is in place, starting a new project becomes much more repeatable instead of rebuilding the same tooling from scratch every time.