I’m pretty sure the video is just badly misnamed. PackageKit is an abstraction layer for interacting with native packages in a cross-distro manner. It’s used by both Discover and Software Center. It is developed by Red Hat, but not as a part of GNOME.
Is that not what KDE Discover and Gnome Software Center do? Or is this a new one for Gnome?
I’m pretty sure the video is just badly misnamed. PackageKit is an abstraction layer for interacting with native packages in a cross-distro manner. It’s used by both Discover and Software Center. It is developed by Red Hat, but not as a part of GNOME.