For now, it's impossible to set mono audio output using Plasma audio settings, and you need external tools to make it working for people with hearing disability.
This option is natively present on Windows, Android, iOS... and it already became a necessary accessibility function on any platform.
Hello,
Please note that the deadline just around the corner on Wednesday, so now is the time to finalize your proposal. Remember that proposals without a Goal Champion will be disqualified, so this step is crucial to ensure your idea moves forward. If you need help or have any questions, please let me know.
If you’re unable to finish your proposal but still want to participate, consider contributing to other ongoing tasks.
Thank you for submitting your ideas for the KDE Goals!