I've heard about RSS being talked about alot lately in regards to "Podcasting 2.0," which has married RSS and the Lightning Network, to try to compete with companies like Spotify who wants to ditch an open protocol for a walled garden. Possibly as social media censorship continues, it may see a resurgence. People try to launch new social media sites all the time. Usually there is a chicken or the egg problem and making one interoperal with RSS might be a way to gain some traction from the big guys.