This comic seems oddly appropriate for that conclusion.
https://www.penny-arcade.com/comic/2003/10/15
Seen it. There are countless reviews of the Andershit books criticizing them for missing the message of the originals,
being ridiculously gory, getting basic details about the setting wrong multiple times, declaring the original books non-canon by claiming they're in-universe propaganda (which makes no sense), etc.
Dune was basically cyberpunk before there was cyberpunk. I suspect that it may have influence the future cyberpunk genre, or at least influenced the
Schismatrix anthology which deals with the philosophical conflict between cyberpunks and biopunks.
I hope the Andershit books don't get adapted. Or at least if they are adapted, they get the hatred they deserve and Warner Bros goes 180 on continuing them. What Andershit did was worse than what Sony did to
Starship Troopers. At least Sony hired people who outright admitted to hating the source material (despite admitting to never reading it). Andershit thinks his shitty fanfics are better than the source material to the point he declared the originals non-canon. How fucking arrogant can you get?
The Herbert Estate are also stupid assholes who denied GOG.com rights to sell the old
Dune video games because they think "if it's old it should stay old," despite profiting off a book written by their dead ancestors decades ago.
This is why I am opposed to current ridiculous copyright lengths. It's very clear that these holding companies have no fucking clue how to maintain the IPs they inherited from their betters, or how to improve initially substandard but potentially promising IPs (they do exist) into something that can stand the test of time.
The Tolkien Estate is sabotaging LotR, the Herbert Estate is sabotaging Dune, Sony is sabotaging SST, Games Workshop is sabotaging Warhammer, Blizzard is sabotaging its ripoffs of Warhammer, Disney is sabotaging Star Wars, Paramount is sabotaging Star Trek, BBC is sabotaging Doctor Who, etc.