I had this very question a few weeks back before I was deciding whether to learn electron or not. I ended up realising that why the hell not, Desktop apps still have an edge over web apps in case of system resources. Also, offline apps cannot work via browser, hence they need a desktop alternative. And if you really need online connectivity, you can always connect your electron app to the backend server using REST APIs I guess. All in all, it is still a big deal if you ask me.