Arch Linux has a package manager written in C, instead of Python, for example.
Besides the Python2->3 thing, are there actually any practical advantages to using a lower-level language for managing packages?
Those legacy tools never were updated for Python 3 because they had no maintainers or developers. When the distribution switched to DNF, they were able to adopt actively maintained software that replaced those that were ported to Python 3.
Would be fun to see some benchmarks.
A smaller binary and no external dependencies is more audit-able, has fewer dependencies for bootstrapping itself on a server or a container image.
When you multiply this by the total number of images, this makes a big difference.