[klibertp]

On the other hand, my Emacs starts up in more than thirty seconds. To fully start up it needs to read some 2k loc of my own ELisp code and hundreds of thousands loc of required libraries.

I use Emacs as a Jabber client, Python and Clojure development environments, file manager, image and pdf viewer, HTTP server, spreadsheet and note-taking app and (polyglot) Literate Programming environment. And that's just the beginning of what it can be used for.

In other words, giving Emacs as an example of small and fast, natively written application is a bit unfortunate. Not to mention most of Emacs is written in ELisp, so the "natively" part is not even factually correct.