What an awful argument.
1) Try Google Reader which works great in Chrome and has an extension for subscribing via any browser (except IE)
2) Mozilla? So what. See 1)
3) Issue IS NOT the browser if any real threat to RSS exists it will come from publishers
4) Extensions & Addons to enable and improve RSS exist all over the place. Use them. Unless you're not one of the self-proclaimed sophisticated users you write about ...
5) RSS rocks ... especially given awful looking forums like this and the ability to strip bad UI and unreadable fonts away
6) Mozilla & Google & Apple all support standards based web technologies across the board. Apple may be leading the pack with great RSS UI in a browser and mail client. But then again the article doesn't speak positively about any aspect of RSS ... too bad.
7) Ever heard of Atom? pubsubhubbub or other syndications that might represent the next evolution? Again .... just something positive to talk about or in Kroc's case ... learn about.