Perhaps not just different use cases but different user types as well. By that I mean for example, I knew of many people who were outraged and dismayed when RS

Perhaps not just different use cases but different user types as well. By that I mean for example, I knew of many people who were outraged and dismayed when RSS feeds started to disappear from websites. They belonged to a class of individual who prefers things to be categorized as granularly as possible. That kind of person is highly upset when their categorizing toolset is downsized. But other people never bother with those tools, don't care if they're eliminated, and frankly find it hard to sympathize with their hypercategorizing comrades.