(Article is from 2020...OTOH, the article is hardly about 2020 situations or events.)
>I think there’s one question left to be answered here, and that’s why Peter Jackson? Why? And I think we can answer this question, because while Jackson’s arrangement makes about no military sense at all, in terms of film construction, it makes a lot of sense.
< problems listed and explained here >
>So while mashing the operational context of this sequence into unrecognizable mush saddens me, I have to say I honestly cannot see a better way to do it while still resolving these problems, keeping in mind the strict restrictions on screentime (which makes adding an Edoras-Éowyn B-plot – technically a C-plot, since this is the B-plot to Frodo’s A-plot – effectively impossible). Alas that it came at the cost of my beloved logistics studies, but as far as sins of adaptation go, this one is a reasonable and necessary evil.
Hence my "stick to books" (and certain magazines, and web sites like HN, and ...) conclusion.
(LOTR-style world building seems orthogonal to plausible portrayals of military operations. If a kitchen scene in a TV sitcom showed a stuffed turkey getting cooked faster than some breakfast cereal got mushy in milk...would you need any backstory to say "a stupid mistake, or a running gag, or satire"?)
Also you can go into more technical detail in a book than you can in a film, and maybe detail wasn't important to the plot of the Martian, but I felt book-Mark's desperation a lot more clearly because of how difficult it would be for me to be clear-headed enough to think through everything that was necessary to stay alive.