I have a few points I disagree with, but let's start with what I do agree with:
Both Dune Miniseries were awesome, especially in making them true to books and easy to understand. CGI, due to the low budget, wasn't top-notch.
First, about the 1984 movie by Lynch - I agree it was an extremely ambitious project and has done many of Dune's visuals true to books (well, except for the ornithopters, these were really bad in the 1984 movie)
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While I said Lynch's movie was an extremely ambitious project, it was far from perfect, to say mildly, even for Dune hardcore fans. It is way too obscure for casual movie-goers, and as a result, it did terribly fiscally.
What Villeneuve did (at least part one, which I saw) is make the Dune movie less complex, visually awesome, and easily approachable by casual crowds. I'm sure that the vast majority of 2021 movie viewers were not aware of the deep and rich Dune history, lore, books, etc... I'm also sure that at least of of these first-time goers bitten by the Dune bug, so to speak, and went searching for more while waiting for 2024's Part II movie.