Sadly, this is still an Electron app in the background. For comparison, my nvim install only needs 9.7MB to open a Ruby file with all my plugins loaded, while Oni requires 165MB just to open a blank file with no custom plugins.
Same thoughts here. Nevertheless, it's nice that it uses NeoVim as its editor.
I started to use Atom on a daily basis since 1.7 and 1.19 is pretty usable. Got tired of waiting for an open source editor comparable in features and functionaity to Sublime Text, but written in a lower level language such as C++, Dlang, Rust or Go compiled to native machine code. It also looks the same on every OS and has nice and original features such as automatic whitespace trimming that I haven't seen in Sublime, or a CSV editing addon for that matter.
Too bad each app comes with the burden of it's very own instance of Electron.