I'm developing an Electron application and I have to agree with you. Although I do not care much about memory consumption, the startup time on a Windows laptop I have sucks too much. Also, I've been doing web development for the last 5 years but web frontend tools are such a PITA even comparing to desktop crossplatform tools, let alone platform specific frameworks..
I think it's a pretty nice option when you don't have the time and resources to develop native applications for a few platforms, or for enterprise apps that are mostly a web front end with a few nice to haves.
I certainly see the point and some use cases for Electron, however I dislike the recent trend of reinventing the wheel of every application using Electron.