Opposite of no-links-tag
I’m not in support of this because other users may provide links in the replies at any point in time.
We specifically chose the model of no-free-links because it’s the only situation where we can guarantee that the tag will hold true
Can posts be tagged at a later point?
The issue is you cannot search to exclude tags
You can exclude tags from the search, use the syntax
-tag:<tag name>, so in your case adding
-tag:no-free-links will exclude from the search results the topics that have that tag.
only higher trust level users are able to edit other people’s tags. And even if it weren’t, I’m not sure people would do a great job at keeping the tag up to date. Seems too difficult to keep accurate tagging over time.