Screens are rigid things, and by default they don’t fold. At least not yet. You never know what future technologies will bring. Yet, I frequently get requests from clients to cram as much information as possible above “the fold” on their websites. Why?
Because at what point on a page do you draw the line where the fold is? Screen sizes now more than ever are so diverse that what can be considered the fold on one screen is nowhere near the fold on another screen.
Websites aren’t newspapers. They don’t fold. It’s ok to scroll down a page to find more information.