Another NewsBlur user and fan here. Here are only a few of the reasons I like it:
1. Extracts full text of RSS articles.
2. Is also a Twitter client
3. Ability to read email newsletters
4. Open source and works well with other services
5. Sophisticated iOS app (believes there’s something for android too)
6. Comment on and share articles through its (quasi)network of BlurBlogs. See for example its founder’s blog: https://samuel.newsblur.com/
7. Easily import, export, add RSS/Atom feeds, jsonfeed and OPML.
8. A helpful community: https://forum.newsblur.com/
@benrapscallion has pretty much mentioned everything. It works and has been working fine for the past 7 years that I have been using it. You can self host but I felt $24 per year for something I use daily is worth it.
Its cross platform and has an excellent Android app that I use. Has some nifty AI. text filtering capabilities that help to sort articles. It does both river of news and email inbox style rss display. Fast support as well and fairly active development that you can track on their repo
After Google Reader shut down I tried a lot of different services and Newsblur felt to me the most closest and natural successor. Its interface is simple and has been largely unchanged, so helps with muscle memory.