I do not really agree with the article. Just because there's no RSS-sign in the browser, it doesn't mean it dies. RSS sucked in browsers since day 1. And people pushing the RSS-button usually do not understand what it does and why it matters.
Imho it's quite an advanced feature that needs explanation. If it's to be seen or not, does not matter. If you reached a state where you actually need RSS, you'll find out about it automatically. And then you will find your extension or bookmarklet that let's you use RSS with a browser and the feed-reader of your choice.
Since using GReader I've never pushed the RSS-button because it usually supports in the different browsers only "programs" but not a subscription in GReader. Which brings me to the next point. Google seems to care about RSS. After all they offer the only service that let's you synchronize via an API your feeds and read-states over several devices.