Apologies to those who answered already, but I think the first version of my question wasn't all that clear and I've refined it...
Currently, the [beginner] tag on SO has been vanquished (along with its meta-kin [subjective] and [best-practices]). However, some copycats have begun springing up to take their places.
Since there is still a tag info page for [beginner], as is apparently the case for all non-existent tags, I though that I could edit the tag wiki to say that it had been outlawed and add tags like [newbie] as a synonym...
Wrong! A tag wiki can't be made for such tags, since you need 100 answer upvotes in that tag to edit it and, obviously, no questions with that tag exist. The tag synonym options are still there, but when I tried to add [newbie] as a synonym I got this:
It looks like it is angry at me because [newbie] wasn't used anywhere, but I don't think it would let me add anything anyway because [beginner] wasn't used anywhere either.
And now to my main question:
- For some of these forbidden tags, should we still have an info page with an active tag wiki and tag synonyms?
I imagine if the more egregious offenders (like [beginner]) were placed on a blacklist (if not already there), then the tag info page could have a tag wiki that explains why it has been blacklisted and the tag synonyms could extend the blacklisting to other tags (like [newbie]), thus helping to keep them from appearing again and requiring more tag clean-up.
And a couple broader questions:
Should unused tags just have no info page altogether, since you can't add to the tag wiki or tag synonyms anyway?
Should we allow adding tags as synonyms even if those suggested synonyms aren't used yet (preemptive synonymization)?