I agree with you on most levels, but I think the author is leaving it more up to developers to develop a site that brings back RSS feeds and newsletters to the masses. That the masses are wanting it, but can't find it. I would love an RSS reader that is FOSS for firefox for example, it would solve so many issues for a lot of things. All I can find is something like feedly that is essentially doing the same thing showing what they want you specifically to see.
I also think the underlying issues are more about the tastemakers being this ephemeral "they" from the masses which can occasionally be overridden, him talking about the creators knowing exactly when people turn away from their content that can be then "fixed", and that the homogenized coffee shop is the norm and authenticity is found by the masses and then ruined. It's a weird flow diagram that is kind of like pre-internet with magazines. Idk, it's a good conversation regardless if he doesn't have the answers.