Someone needs to make a site like You Might Not Need jQuery but You Might Not Need Docker. It's unfortunate to me these days that putting everything into containers seems to be the default.
OCI artifacts are one of the most under hyped technologies. Almost everyone already has an image registry, now that registry supports basically any kind of package and with nice versioning semantics.
Why wouldn’t you use it? I don’t want to auth again into something else and deal with different registries for every language I have.
Most major tech companies I've worked with have an internal OCI repo of some kind maintained; internal packages are available and external packages are cached (or blocklisted, in certain situations, which is its own flavor of helpful for security risks) and everything from Docker to Maven to Pip/Poetry/etc. Just Works.
https://cloud.google.com/artifact-registry/docs/python
This is just a private PEP503 repository, your own private PyPI.