As an example, say I have records related to my taxes - a bunch of documents and images - organized into directories by year, and I want to copy all of the images for the last 5 years out into a temporary directory so that I can flip through them easily. I can browse to my taxes directory, do a search for "kind:picture" then sort the results by modified date and drag the relevant items into the destination directory.
For some types of tasks this is so convenient that sometimes when I'm ssh'd into a server on my home network I'll move files into a mounted network share so that I can manipulate them from Windows Explorer. Clicking around a graphical file explorer is just way less cognitive overhead than stringing together a big command on the command line. Windows Explorer in the Windows 10 era isn't great, but it's much better than e.g. Finder or Thunar, which are my other options on my home computers.
I have a lot of ebooks on my computer (> 10000). One problem with organising books and other PDFs is that sometimes they fall into multiple categories. (Should a new scientific article on lucid dreaming go into 'brain and cognitive science' or 'meditation' or 'hypnosis' or 'sleep' or 'self improvement'?) I could dump each new file into the directory representing the first category that comes to mind and make symbolic links from directories referring to other categories, but in the end the number of categories is practically endless. Search is in practice the only workable solution.
Calibre has nice search by 'title:', 'author:', and 'vl:' but eventually it has still the same problem of endless categorisation.
Manual classification is still useful to classify documents according to labels that are not present as strings in the books' contents though.
Folders work. Tags can work. Search can work. The frankenstein folder-search monster that is windows 10 used as designed - that simply doesn't work for anybody.
In general, I find it very hard to believe this is a people few users rely on. It's the primary way to launch programs for me.