Linus himself has been long advocating for something flatpak-like in general: One of his projects, subsurface, is not exactly of interest to most people for the simple reason that most people don’t dive, why should half a gazillion distros maintain their own packages? Distros should focus on the actual OS part and a full-featured DE, from document viewer to browser – stuff everyone needs, also the little stuff practically noone wants to choose, like, say, a desktop calculator.