I'm a little confused. My reading of the article was that if only we could cache HTML, things will be faster. So the article proposes some new headers for that

I'm a little confused. My reading of the article was that if only we could cache HTML, things will be faster. So the article proposes some new headers for that purpose. I didn't see the existing headers, which are standardized and supported by browsers and CDNs already. Without a comparison to the existing tools that solve this problem, I'm unclear on what additional value this vendor specific standard provides.