wasted work in SpitAndPolish spec regarding decoration-less dialogs?

[Jonas Jørgensen]

https://wiki.ubuntu.com/DesktopTeam/Specs/SpitAndPolish specifies some
work to prettify decoration-less dialogs. It says that "Good examples
for decoration-less dialogs are the unlock-dialog of
gnome-screensaver, the logout-dialog of gnome-session and the
authenticate-dialog of libgksu".

Considering that there are specs about removing all three of those
dialogs (see links below), I don't understand: What is the point of
doing this work to make a certain kind of dialogs prettier, when it
seems that Ubuntu is moving away from using any dialogs of that kind?

These are the specs I'm referring to about removing those dialogs:
logout dialog: https://blueprints.launchpad.net/ubuntu/+spec/exit-strategy
gksu dialog: https://blueprints.launchpad.net/ubuntu/+spec/killall-gksudo
screensaver unlock dialog:
https://launchpad.net/ubuntu/+spec/consistent-login-screen

Jonas