The tag snippet for new-gm reads:
For questions specifically about problems inherent to becoming or tutoring a game master (GM). This tag is not for just saying "I am a new GM": see the full tag wiki for important usage notes.
The full tag wiki goes on to provide robust guidance for use of the tag, more robust than most, if not all, of our other tags. It seem we were very intentional about constructing the usage guidance to avoid the problem of just slapping the tag on questions that just happened to involve a new GM when the question didn't substantively relate to problems unique to new GMs.
Unfortunately, it seems we have failed. Reading through the list of open questions tagged new-gm, it seems we have done a rather poor job of applying the usage guidance we have for the tag. A large proportion of these questions are problems we have probably all faced in some form another as GMs, and just have the tag because the question author was new to the role.
The volume is not tremendous, but it is certainly non-trivial, so I am putting this here to get some community feedback for cleaning up this tag. I think it will probably be as simple as a standard retagging effort, but I wanted to get some thoughts and see some community support for the idea before undertaking the project. I'll also note that a good chunk of these are not D&D 5e, with a large chunk of those being 4e, 3.5e, and PF1e, and then another large chunk are not in the D&D sphere at all. So a retagging effort will require some coordination between several system experts to make sure it gets done right.
For reference, here are the previous meta discussions we've had concerning new-gm: