Looking over the actual killer feature for Electron: running your existing web code with native features layered on top. I mean yeah Tauri does this too, but I think it's relatively rare for someone to decide "I'm going to build a standalone native desktop app in Electron because it's easiest," they're thinking "I already have this PWA that i can repackage with native features without maintaining a whole second UI."

Or at least, that's how it went where I work.