Request #40430 has been Accepted by serebit [1]:
[Autogenerated] Accepted deletion for gnome-meta.
[1] https://aur.archlinux.org/account/serebit/
If you just install the group, new additions to it will not
automatically be installed during system updates. The meta package
guarantees you always have all group packages installed, and
additionally, packages no longer part of the group will become orphans
and easy to clean up.
Take a look
yochananmarqos [1] filed a deletion request for gnome-meta [2]:
There is no point in creating a meta package for a group.
sudo pacman -S
[1] https://aur.archlinux.org/account/yochananmarqos/
[2] https://aur.archlinux.org/pkgbase/gnome-meta/