Guess I'll correct you here. They have been transitioning all of the adult scenes into cutscenes, and those cutscenes have always been ONLY in the uncensored patch. You are incorrect that nothing is being downloaded. The Explicit DLC now downloads a bunch of stuff for each character as well as their new textures, and takes the existing cutscenes that exist in the base version of the game, and replaces them with the extended explicit versions. These scenes are verry high quality actually, and that is the reason they are now charging for the DLC.But it didn't really download anything just unlocked nudity and linked the DLC to your steam account.
I think the problem is that everybody assumes that all the DLC does is uncensor nudity. That's simply not true anymore. It adds a ton of additional content to the game now.