Ok, according to the help pages:
Incorrectly tagged questions are hard to find and answer. If you know of common, alternate spellings or phrasings for this tag, add them here so we can automatically correct them in the future. For example, suggest “bike” as a synonym for bicycle, or “sock” for socks.
Now, why is gnome-shell and gnome-shell-extensions synonym of gnome? GNOME, last time I check out, is an umbrella project for an array of libraries, programs, etc. under the same goal. The tag excerpt agrees:
GNOME (GNU Network Object Model Environment) is a collection of GTK-base software that provides the desktop environment GNOME-Shell. This is a very general tag that should only be used for questions referring to GNOME in general, and not a specific component.
The problem is... that specific components like, gnome-shell and gnome-shell-extensions are being directed to that tag, and I mean to ask... why? The gnome related tags has the advantages that most of them start with the prefix
gnome-, so I can follow the entire gnome questions or just the, i.e. gnome-shell-extensions. Can this be reverted back to 3 separated tags, please?