Actually, the Linker is not very UI friendly, in that we don't really see it doing anything. The linking is not transparent, we don't have any small window showing that elements are scanned in real time or anything, there's not even an UI element telling us the linking is "in progress", like a glowing button or something. We don't see what elements are seen by the Linker, we are not told if an element was found and added to the link.xml. Etc.
Considering the high sensitivity and importance of the Linker in a project, it deserves to provide a better UX to users.
Also, the documentation isn't clear enough, there's this Debug option that needs to be ticked although that's not necessarily obvious because we could also think there's an implied "release" mode if we don't select "debug". We're not told what happens if it isn't ticked, nor what happens if we leave it like this once the linking is over.
We're not told if the Linker found a link.xml file, if it's going to update it or replace it, nor where.