I'm sure there are advatages to making web apps over regular software for OS's and that supply attacks can happen anywhere.. but the idea this is unavoidable is insanity. Stop making reckless "modern" web apps.
Speaking of "modern web apps" does OpenSUSE still use Firefox as an installer? When I tried the new major version on release I watched a browser unexpectedly open and slowly load a page. Coming from a snappy dedicated installer of prior versions, this made me question if I had downloaded malware.