I like your comment, but I think Electron is only part of the problem. IMHO, the bigger part is that all these apps are built using JavaScript and all the SPA style frontend frameworks. Heavy Javascript-based UIs aren't slow because of Chromium or V8... I wouldn't blame it on them. It's the frontend frameworks and libraries, their design and abstractions, and then as a consequence, how they are used by developers.
Yeah, I agree fwiw. I think that most engineers have a very weak idea of "fast" vs "slow". I've met people who think JS is really fast, or that Go is like C++ level speed. And we wonder why software is so slow.