They seem uninterested in trying to get their hardware supported by submitting their patches for inclusion in the Linux kernel, and popular distros. Instead, you have to trust their repos (based in PRC).
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).