To further your anecdote, I've mentioned it before, but I recorded myself sleeping for about a year due to REM behavior disorder. I act out my dreams due to having a higher electrical output than atony resists normally. Means I could easily see when dreaming and when not. Short of it, it did not stop my dreaming nor my REM behavior disorder. If it stopped REM, it would be a solution for this, also common in Parkinsons but due to different reasons.