1. Extremely good for cli power users and people who use console-based browsers occasionally (guilty of being both).

2. Less likely to stumble upon a really weird behavior in some browser, even the common ones.

3. Faster for anyone who doesn't have a server-grade workstation.

4. Server-side caching - play it smart and you can cache large chunks of the rendered pages, making it an extremely cheap operation to serve.

5. No 80mb javascript files you get on every "modern" website.

6. Easier to maintain.

Just a few off the top of my head.

* Faster page loads is the number one reason. It is super fast to navigate, once you get the shortcuts down. (For now it might actually be a bit slower if you're not in EU)

* Simpler architecture

* You get a lot for free by the browser (loading state, back button actually works, etc)

* Accessible

* Works on every browser (even your mother's potato phone :P)

* Works without JS

Yeah, Miniflux is definitely coming from the same mentality as we are. Also, it's great. :)