Earlier quoted context omitted.
How many different versions of OpenSSL are running on my laptop right now? Who can say? That's the beauty of flatpak: if you sweep the problems of software management under a big enough rug, they go away and never bother you again.
Why would I care? Ok Spotify has an old package with some vulnerabilities in it. But flatpak has it sandboxed so the worst you could do is maybe steal my Spotify session token. That's more a problem for Spotify than it is for me. They will go and fix their package and I will reset my sessions. Meanwhile we have distros lagging behind for years to provide a new package because they can't break all the things depending…
With an open sandbox by default for many apps…