While I agree with his general idea that Electron is usually not the best tool for the job, I think he's overestimating JS as the reason that people choose Electron. It's not because of JS, it's because of HTML and CSS, which aren't that bad comparing to other tools we have (especially since Flexbox). I think most people would love to write desktop apps using HTML and CSS, while using anything other than JS to do the logic. We're just... not there yet.