RSS is a solution in search of a problem. It's folly to blame users for not adopting what a handful of technophiles are infatuated with.
In the browser, the "news feed" experience has already been widely adopted and works perfectly well. I go to my favorite websites, browse the items on their front pages, and pick and choose the content I want to read. There's no separate app for it. There's no need for a separate app for it.
The best way to improve RSS uptake would be to make it easy to browse feeds on a web page, or as a web page. But then again, that's what front page news feeds are for! So what's the purpose of RSS again?
If webpage-based news feeds aren't clean, light, and easy to follow, that's the website's problem.