Click bait. This is from an interview from before Herbert saw Star Wars.

“while Herbert hadn’t yet seen the movie, he did have some thoughts about its similarities to his seminal series,”

Although it goes on to say that Herbert continued to have resentment for Starwars for the rest of his life.

Heretics of Dune:

“He’s a three P-O,” they said, meaning that such a person surrounded himself with cheap copies made from déclassé substances.

isn’t Star Wars an imitation of Asimov’s Foundation ?

This is already being discussed on another instance:

https://lemmy.world/post/12083115