Some people can’t because they need updated proofing tools and that version no longer has updates.

Flatpak doesn’t have an “ask for permission” system afaik, at least not standardized.

Exactly, and that’s precisely the reason why it’s still not a viable solution for the average user. This a big problem and a problem of consistent and integration between Flatpak , GNOME, KDE etc.

Sure, just try to get a password manager to communicate with a browser both on Flatpaks. Things like that should work, that’s what people expect, or at least should prompt the user for permission to communicate like Apple does.

Yeah, Apple, but at the same time and unlike GNOME and Flatpak Apple actually did a decent implementation of system containers for applications that doesn’t result in barely usable applications.