No, variable output is not "exactly what's needed". Layout of information is an actual skill -- whether it's a resume, a newspaper front page, or a photo galler

No, variable output is not "exactly what's needed". Layout of information is an actual skill -- whether it's a resume, a newspaper front page, or a photo gallery -- and we can expect layout to be an important design factor as long as humans have eyes that can process information in formats other than a byte stream. HTML has been an excellent format for delivering data and information across innumerable devices and visual dimensions. That adaptability comes with tradeoffs. As others have pointed out, anyone who's browsed the Internet Archive knows how HTML, beautiful and organized in its own time, can look like slop today. Paper/PDF's tradeoff, of course, is its rigidity.