You've basically described Flutter and Jetpack compose(for desktop). The problem really does turn into effort to pay off, even if we stayed with JS and the rendering engine, figured out a way to compile JS into native code and completely stripping all of the unused functionality and doing the same thing with the rendering engine. All of that would need to be made, it's not like electron apps literally crash you machine. You have metrics, hundreds of millions of devices running electron apps at a daily basis. Unless you make your own company, I don't think anyone can convince their leadership to take such a decision.

I'm not arguing for actually doing this, I'm just suggesting Claude's limitations are actually an issue (contrary to what the article asserts).