But there are a few differences between Flash and Electron that are not small. I mean the first thing is, Electron is open source in a open Standard, and have a fast development cycles to fix performance and security issues.
I think it's like a PHP situation. Electron is easy to use and sells itself as a cheap way to build apps, so this attracts lazy developers so we have a lot of problems, but that doesn't mean the technology is bad. But this is not a Electron problem, I mean web pages right now are heavy and slow for nor real reason. We need better fron-end developers.
I love VS Code, Hyper, and others, so maybe I'm biased, but I think Electron will be a interesting option to make desktop Apps something again.