I want KDE to remember my phone as an allowed input device, even after reboots.
It is really annoying, to have to stand up again, just because you get the pop-up asking you if you want to allow that input device. (the checkbox, asking if you want to allow restoring this in future session, doesn’t work)
Yes, it increases Attack Surface, so I think this should be Opt-in.
It’s not remembering is making it less Useful 
(especially, because the Firefox Extension does not work with the Flatpak version of Firefox, so you can’t even control Playback)