Completed an exhaustive play through in patch 4 and never had any of the dream sequences.
Worth noting I also did not get the famous song scene or even audio - and haven't in any of the previous play throughs I have completed, some 184 into the game across those play throughs and have never experienced one of the most vaunted scenes in the game.
This feels like a serious problem.
I think you have to use your tadpole powers to get the dreams.
In my first playthrough I never used them and I had no dreams.
Prof. Dr. Dr. Mad S. Tist 
