I thought Timothée Chalamet looked right for the part, considering Paul is supposed to be 15 when the story starts. I didn't have a problem with the casting or the performance at all. And I liked Rebecca Ferguson too. She didn't come off as weak, to my mind. Again, each to their own, but I can't agree at all. Dune Part One was pretty much a cinematic science fiction masterpiece, to me at any rate.