gnome-3-38-2004 can be removed from a system containing a firefox snap with no warning

[Fedon Kadifeli]

On an Ubuntu 22.10 system, please note the following:

$ snap list
Name Version Rev Tracking Publisher Notes
bare 1.0 5 latest/stable canonical✓ base
core 16-2.58.3 14946 latest/stable canonical✓ core
core20 20230308 1852 latest/stable canonical✓ base
firefox 111.0.1-2 2487 latest/stable mozilla✓ -
gnome-3-38-2004 0+git.6f39565 137 latest/stable canonical✓ -
gtk-common-themes 0.1-81-g442e511 1535 latest/stable canonical✓ -

$ sudo snap remove gnome-3-38-2004
gnome-3-38-2004 removed

$ firefox
update.go:85: cannot change mount namespace according to change mount (/var/lib/snapd/hostfs/usr/share/gimp/2.0/help /usr/share/gimp/2.0/help none bind,ro 0 0): cannot open directory "/var/lib": permission denied
update.go:85: cannot change mount namespace according to change mount (/var/lib/snapd/hostfs/usr/share/xubuntu-docs /usr/share/xubuntu-docs none bind,ro 0 0): cannot open directory "/var/lib": permission denied
ERROR: not connected to the gnome-3-38-2004 content interface.

$ sudo snap install gnome-3-38-2004
gnome-3-38-2004 0+git.6f39565 from Canonical✓ installed

$ firefox
[ ... runs OK ...]

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See also this: https://askubuntu.com/questions/1462400/removing-old-and-unneeded-snaps