I was wondering if anyone else has encountered the same issue as I have. I know how I would approach this if Akregator was installed on the system rather than as a flatpak, I would just change the command run by the app when opening in an external browser to flatpak run org.mozilla.firefox about:reader?url=%u which just appends the about:reader portion to automatically open it as such. This command does work from my terminal but naturally does not work with Akregator.

Any help would be greatly appreciated!