I suspect it doesn’t need any more complexity, and literally nobody is advocating it does. That’s why that the web is a big place sentiment is so useful. We talk about complexity, but it’s all opt-in. A wonderfully useful (and simple) website of a decade ago remains wonderfully useful and simple. Fortunately for all involved, the web, thus far, has taken compatibility quite seriously. Old websites don’t just break.
– Chris Coyier on complexity in web development