Electron is really just Chrome with a separate JS engine that can run native code if the developer chooses to do so.
Personally I'd argue that the "nativeness" of an application depends on how much the developer actually uses that ability to run native code. If you just throw a bunch of standard webapp CSS, JS and HTML in a folder and wrap Chrome around it, it's no more "native" than any other webapp. If on the other hand you have a whole bunch of native code doing, for example, media editing and the HTML and such is just the frontend UI, I'd say sure, that's a native app.