I think you've missed the point of the presentation. Optimization tricks such as these are fun for us nerds to work on but at the end of the day it's like adding another lane to a highway or deflating a tire on your jeep (to use 2 metaphors from the talk). Compilation of the dom won't reduce the size of images or JavaScript files. And lastly, the author makes a point towards the end that in addition to page size, there is also the notion that plain old HTML and CSS is something new people to the platform can easily learn from and work on themselves (mineceaft vs. call of duty was the author's analogy about this).
> Compilation of the dom won't reduce the size of images or JavaScript files.
The problem is not so much about images or js, it's more about webapps generating fat html and so much css.
As for javascript, to me it's not a good language choice for many reasons. It's being used extensively like a core language to build web applications, while it's just a scripting language. HTML was never meant to be used like this.
To be honest I don't really understand the analogy.
