To me, RSS and Twitter/FB/etc are very different things. With RSS you are „alone“ while reading it. There’s no one to discuss things with you. I‘m not really qualified to make this statement, but I‘d say RSS feeds don’t have a social component, leaving your limbic system (responsible for social interaction) widely out of the process. You process the info and that’s it.

With Twitter, everything is attached to a social context. If a link is posted by your personal idol, you engage in (pseudo?) social behavior if you read it. You may then feel compelled to discuss it, and you will feel rejected if nobody answers, or very good if you get a lot of likes. So, lots of limbic/social interaction.

Both have their merits.. without Twitter, I would have a content discovery problem, and with (only) Twitter I‘ll live in a bubble, plus my IRL social interactions might be somewhat crowded out by the interactions on Twitter, plus Twitter can make me feel socially miserable for very petty reasons.

Personally I would love a system that combines my personal RSS feed with recommendations resulting from mining Twitter and applying ML to generate relevant results.