H @Bildarchivare,
That approach, which I find attractive, makes the Keyword field the least important of the fields when it comes to search terms. It treats the field as a catch-all for terms that aren't already elsewhere and aren't central to the image. Carl Siebert seems to endorse this view in one of his posts and videos.
I have the impression that the approach is the direct opposite of what many people actually do. Recently, I watched a video in which someone demonstrated using the Structured Keywords Panel. His demonstration amounted to going to a fair amount of effort to duplicate the content of the Location fields in the Keywords field.
If one takes the view that Description/Headline/Location come first, it raises the question of what to actually use the Keywords field for.
