Not cinema material. Plenty of other stories would have been better fodder.
The tragedy is that the soap-opera follow up books by Brian Herbert would be easier to film, though they screw cannon and dumb down the plot and main characters.
Frank Herbert Vs. Brian Herbert: Dune Cannon Vs. Everything Else
https://libertyislandmag.com/2019/03/01/frank-herbert-vs-brian-herbert-dune-cannon-vs-everything-else/