The question is which method is more prone to issues. Perhaps a QA process of sorts could be builtin to the "app store" to at least be able to boot the app with

The question is which method is more prone to issues. Perhaps a QA process of sorts could be builtin to the "app store" to at least be able to boot the app without errors? Also I am not saying flatpaks or apt should go away. Just saying that it would be nice to have a realiable way to download a package and run it, no hassle.