Bob, you are an absolute mongoloid. Just because a single scene from Jaws was filmed in a swimming pool (and this was only in reshoots because the studio wouldn't let Spielberg go back out on the water for one more scene) does not take away from Villeneuve's statement that 99% of the movie was not. The result is a movie that, despite all its troubles during production, became a blockbuster hit and catapulted Spielberg into fame. I'm not saying it's entirely due to on-location filming, but it certainly played a part.
The fact is that despite all the advancements in visual effects, our brains are still really good at picking out things that are real, especially when it comes to film. Shooting in actual locations, on actual sets, with actual props and visual effects, looks much better than the CGI vomit that many movies these days (cough cough Marvel cough) rely on. I mean shit, when it was revealed that Disney used CGI for that scene in Black Widow where it was just two characters chatting in a bar, people rightly called them out on how stupid that was.
Well, most people did. Bobby, naturally, fellated Disney for their genius.
It's been a running gag ever since the typography for the Dune logo was revealed. Ignore the star from the middle of the "E" and focus solely on the lines, and you get Dunc. It's just a happy coincidence that it's part of Duncan's name.