Is it possible that Podcasts are the last remaining widespread/mainstream use case of RSS?
Some of my reasons are:
1. Having a central place where I can keep track of my my reading lists.
2. Offline first (download for later use is the default behavior)
3. Deduplication - for advanced use cases such as messy web feeds, where ordering is far from guaranteed, a well defined key can reduce the clutter significantly.
4. Advanced filtering (Newsboat is great at that)
youtube,news(papers) and so on have support for RSS or are supported using 3rd party providers