I use KDEconnect mainly for remote-controlling my PC when I am laying in bed being lazy but when the task is not big enough to bother using VNC or SSH. So for switching tracks, fast forwarding shows, controlling mouse and keyboard. So Warpinator wouldn't be an option.
However, I found a way to fix the kdeconnect problem without uninstalling it.
Just install kdeconnect, set it up with all rights enabled it asks for and then as a final step go to accessibility and remove the rights. You'll end up with a perfectly functioning kdeconnect integration and working hardware key