I read this article and ended up with the exact same question. Does it mean that it wants to imitate Chromebooks, where the most important app you use is the browser, and all of your apps are in the cloud rather than on the desktop?
No, the OS itself is a read-only container image booted on bare metal (via OSTree) and includes the tools usually used to build container images (used for kubernetes etc), as well as pushing desktop applications via Flatpak.
I guess it makes you feel better as a user to be part of the hyper converged buzzword bingo. But seriously it seems to be both web and container (web) focussed. They should maybe rather say what they are not and what the limitations of their approach is ( I guess isolation comes at some costs)
