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pyenv can compile Python versions that might not be available with "apt install" yet. And you can have multiple minor versions available (3.7.8 and 3.7.9, for instance), if you ever need it.

I don't know if it's "superior", but it helps you manage / install / uninstall / set system Python versions, as well as virtualenv features. That's it.

Thanks. IMO changing system python versions might confuse some people.

I often have to debug not-so-tech-savvy colleagues' python scripts/environments.

If we used pyenv, I could picture me telling them that they forgot to switch system python environment.

If you forget to activate the venv you cannot accidently install packages in your system python.