Maybe I am missing the point. When the problem is speed and the solutions seems single page app with bloated javascript or the thing the poster suggest. Why is

Maybe I am missing the point. When the problem is speed and the solutions seems single page app with bloated javascript or the thing the poster suggest. Why isn't the solution just simple classical HTML without any bloated Javascript, which also needs to be executed. The CSS is cached, so it doesn't need to be reloaded and the next possible pages are prefetched via the correct META tags.