I
tested this and I know that you can combine the spoiler tag with the article tag and this combination works. You can
edit the BBcode of the automatically-generated forum topic and change the first message so that it uses a spoiler tag, if that is what you want to do.
I am sure it is possible to change the way that the
Kunena Discuss plugin works so that, in your case, all your articles will
automatically generate spoilers + article tags. For any amount of money, your time or your own PHP coding skills, you can change
Kunena to do virtually anything you want to do. The
Kunena Discuss plugin is free and its functionality is limited to what you are able to download from this site. Depending on your own ability to change the software, or a budget to employ someone else to make these changes for you, you can change this free software.
The
Kunena Discuss plugin does not automatically do what you want it to do. However,
Kunena Discuss plugin is open source software and you can change it. I do not know, specifically, where or what you would need to change. Perhaps someone else who is feeling generous might like to give you the information.
