Then create an open source cross-platform GUI framework/toolkit that's technologically superior to Electron and also at least as easy and convenient to use and deploy, and people will dump Electron in droves.

I mean, please do! I would be delighted about an efficient, cross-platform, cross-language, convenient GUI toolkit. But I'm not holding my breath, and I'm tired of people complaining about Electron without offering an alternative that's superior along all relevant axes.