Почему большие пакеты зависят от конкретных тем значков?

Я использую тему значка Breeze и хочу удалить остальные.

Однако при попытке удалить множество других зависимостей.

например. human-icon-theme

sudo apt-get remove humanity-icon-theme
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  adwaita-icon-theme-full
The following packages will be REMOVED:
  humanity-icon-theme ubuntu-mono
The following NEW packages will be installed:
  adwaita-icon-theme-full
0 upgraded, 1 newly installed, 2 to remove and 2 not upgraded.
Need to get 8,429 kB of archives.
After this operation, 3,985 kB disk space will be freed.
Do you want to continue? [Y/n] n
Abort.

Есть ли иерархия в этих темах, и они строятся друг на друга или что-то в этом роде?

Другой пример: adwaita-icon-theme

sudo apt-get remove adwaita-icon-theme
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following package was automatically installed and is no longer required:
  gnome-icon-theme
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
  gnome-icon-theme
The following packages will be REMOVED:
  adwaita-icon-theme firefox gtk2-engines-pixbuf gtk3-engines-breeze humanity-icon-theme kde-config-gtk-style kde-config-gtk-style-preview libgail-common libgail18 libgtk-3-0
  libgtk-3-bin libgtk2.0-0 libgtk2.0-bin libscim8v5 plasma-desktop ubuntu-mono
The following NEW packages will be installed:
  gnome-icon-theme
0 upgraded, 1 newly installed, 16 to remove and 2 not upgraded.
Need to get 9,618 kB of archives.
After this operation, 157 MB disk space will be freed.
Do you want to continue? [Y/n] n
Abort.

Это

Почему эти другие пакеты зависят от конкретных тем значков?