I also use newsboat. I've been thinking about building my own bespoke rss reader. Not sure I want to do it in bash though.

Recently, I started reducing my dependencies on external software. Yesterday, I thought, why not write an RSS reader myself. It will not be as powerful and robust as my current one, but it will be simpler, more hackable, and mine, i.e. I will not be dependent on a stranger's commit that might break my system accidentally or on purpose.