Every Electron application I've used has been sluggish and straight up pathetically slow compared to any native counterparts. I think there are two reasons its picking up steam:

* Your can now make your web devs (HTML/CSS/JS etc) do your application development as well

* General popularity of web development is exploding

* There's no comparable free, permissive native framework. The closest thing is Qt and its LGPL. No one wants to touch the GPL.