It sounds simple on the surface. You copy a link on a site into a feed reader app. Then whenever that site updates you get a nice readable article on the app.
But that sounds like something that could be accomplished locally. Why does every RSS reader I run into require an account or otherwise rely on the cloud?
Accounts are not required.
I use mpage https://github.com/mpod/mPage?tab=readme-ov-file
dense and simple