It seems that the tag specific-user is almost never used on Meta sites; for example, Meta.SE or Physics Meta does not have such a tag. In my opinion, this tag should be removed because of the following reasons:
According to this guideline, meta is a place to talk about how this community should work, rather than how a specific user should work. If any user has any problem with a specific user, the best and only way for them, I think, is to talk to a moderator in a chat room or flagging a related post, rather than addressing that user in a public post.
Existence of this tag among others is somewhat misleading. Any user, especially novice Meta contributors, may conclude that they can easily address any user in their Meta posts.
According to this guideline, tags should be used to help people to browse posts related to the subject of their concerns. I think this tag does not help anyone in this matter.
The Stack Exchange community team explicitly stated that we always kill off the tag every time it appears. I think, removing the tag by Math.SE users themselves is better than that the community team kill it off by force.
So, my question is,
is it not better to remove this tag?
I hope this post is the last Meta post tagged specific-user.