As there is precedent with scrivener, shown in this meta discussion I would say that the creation of a tag is okay. There is also a specialised tag for microsoft-word, too. See also A broad guideline for questions about writing-specific software.
But tags should only created when they are needed.
Creating tags just because someone at some point may ask a question about some software for a specific field is not a good thing. Especially because you need an answer to create a tag. But asking nonsensical questions just because you want to introduce the tag is also not a good thing.
If you have a real question about the software now that you are working with it you can simply add the tag by typing it in the tag bar when asking a new question. It would be very nice if you could afterwards propose a tag wiki for the tag so that other users who stumble upon the tag know what it's about.
The best thing would probably be to wait a bit and when there are a couple of questions making a new tag and re-tagging the older questions. This way we would know that the tag would not only be created for one single question.
There currently is one question on the site mentioning articy:draft: Can Articy Draft be used to write a book?. So if you have a couple other questions about the software I think it's okay to create the new tag and re-tag that one.