congratulations, LA residents! Your bodies have been donated to a corporation for beta testing!

That will downgrade you from plasma 6 to plasma 5. Not worth it!

In defense of this warning, when I first put my application on Flathub, I had it because of how file i/o worked (didn’t support XDG portals, so needed home folder access to save properly). It did actually motivate me to get things working with portals to not request the extra permissions and get the green “safe” marker.

A lot of apps will always be “unsafe” because they do things that requires hardware access, though, so I could see them wanting something more nuanced.

Live like Gentoo, cook everything from scratch

In my case I had another WM installed (iceWM, I think it was there by default?) and did the upgrade from there. Unfortunately it does seem that if you try to upgrade from within KDE it will crash part-way (I used zypper dup and it failed).