As a reader of a website, I usually primarily care about what the page looks like when it's rendered, as opposed to how clean the HTML is.

Granted, the current trend to make everything feel like a shitty JavaScript application would be taking it too far, but lwn.net is definitely not a pleasure to read. Yes, it displays "just fine" in links, lynx, elinks, etc., if your definition of "just fine" is Fefe's Blog.