Keep in mind that for a lot of Chinese companies, it's difficult to (legally) access some outside resources.

My company hosts our docker images on quay.io and docker hub, but we also have a tarball of images that we post to our Github releases. Recently our release tooling had a glitch and didn't upload the tarballs, and we very quickly got Github issues opened about it from a user who isn't able to access either docker registry and has to download the tarball from Github instead.

It doesn't surprise me that a lot of these companies have the same "release process" as Wii U homebrew utilities, since I can imagine there's not a lot of options unless you're pretty big and well-experienced (and fluent in English).