Comment 1 for bug 1981485

As far as I can tell, gnome-3-34-1804 is not required by any seeded snaps in Ubuntu.

This requires looking for snap: lines in
https://people.canonical.com/~ubuntu-archive/seeds/
and checking that they don't need that snap.

The Ubuntu Desktop image does not need gnome-3-34-1804 for its seeded snaps.

I saw three additional seeded snaps for other flavors:
software-boutique
ubuntu-budgie-welcome
ubuntu-mate-welcome

None of those use use any gnome content snaps.