No, no. You can still do it.
Go into your Stardock Games folder, and then open the "Galactic Civilizations II: Ultimate Edition" folder.
There is an icon named "GalCiv2". This is vanilla Dread Lords.
You should also see folders named "Twilight" and "DarkAvatar." Opening those you will find icons named "GC2TwilightoftheArnor" or "GC2DarkAvatar" respectively.
Create a Desktop Shortcut of any or all of those icons.
Right click on the new Desktop shortcut and go to Properties. Where it says Target, add "cheat" to the end of the line. There ya go.
Double clicking on the shortcuts now will launch the game with cheats enabled.