It's basically a single layer image with a multi-platform image index per tag(version) on top.
No smarts added, performance wise it's probably worse than running your own dedicated pypi index or any purpose-built system, my main goal is a private index for if you don't have access to one already.
That's fair. I'm used to thinking of OCI images as being a particular optimization (there's a reason we don't ship containers around ass rootfs tarballs), but for your usecase it may well be a premature/pointless optimization.
