I can't remember the number of times I have given up on software because there is no “Concepts and Facilities” document that gives me a mental model of what the program will do and how I operate it. Instead, one sees a website with a mass of unrelated documents that I'm supposed to read in some order, and divine how everything works.
Maybe because I'm a child of the 20th century that I value documentation that gives me a path from understanding what and why to learning how I can use it, with a master index so I can look up exactly what the “Mung Until No Good” command does, and see which other commands relate to it.
Perhaps one day generative AI will be good enough that we can feed in one of these websites, with its pages with titles like “Migrating from V4.7.2 to V4.7.3” and “Building for OS/2 Warp” (I exaggerate, but only slightly) to documentation that is useful for learning, use, and troubleshooting. I live in hope.