It's been 13 years ~~
https://techcrunch.com/2013/07/06/google-reader-is-gone-but-why-is-everybody-building-their-own/

The Death Of Google Reader Opens The Door To A Smarter Subscription Ecosystem | TechCrunch
Editor's note: Julien Genestoux is the founder and CEO of Superfeedr. We all know that Google Reader, which used to be the most obvious RSS subscription tool, is now gone. At the same time, we see “follow” buttons on just about every website. We are at a tipping point with two contradictory trends: the decreased visibility of RSS feeds and the popularity of the “follow” feature. Google Reader and its market share was the biggest road block to a world where “following” can be both decentralized (open!) and ubiquitous.
