Comment by necovek

You get exactly that with snaps/flatpaks which are not given access to your $HOME.

But even with your example, you might need access to cover art from your graphics editing app, and very quickly you get to the same state. How about lyrics file from your text editor or a dedicated one? And wait, I'd like to mix in some music into Audacity too. File portals are actually a decent solution there, but they only work for files with supported software.

Yes, you can adapt your workflow, but it's going to be adapting and you will lose some things you might love in your workflow.