Two of my favorite (sci-)fi writers both use crazy big Excel files that almost crash their computers when loading. For research but also keeping track of story loops. I can imagine something like ChatGPT Work with markdown/python/CSV's can do quite some magic for such writers.
Writers (older genre writers particularly) tend to be a bit behind the technological curve, and they stick with whatever works. If you want to see a treasure trove of "old web" sites, look up the site of any sci-fi or fantasy author. Chances are its design and layout still look like something from the late 90s.
The vast majority of AI apps don't actually solve any novel problems (pun intended come at me,) they're just new versions of existing solutions "but with AI."