I see what you mean, but it just felt different. Its not like they told us that
I think Dune was pretty specific. Very early in the first novel they outright tell you that Dr. Yueh betrays Duke Leto, causing his death, and that Paul becomes Muad'Dib and leads a jihad. Irulan's passages at the beginning of each chapter tend to contain huge spoilers. One halfway through the book is about the Emperor reflecting on his loss at the hands of Paul, years after the events of Dune.