Logic behind Folders in iOS

One thing I can't get my head around is limited items in folders. This is probably the last biggest reason for me to want to Jailbreak. Would it be really that unintuitive for an average user to have a scroll in their folders?

Everyone who ever used a computer knows that you can put more items into a folder than fits in a window. Everyone who would ever use folders in iOS would first scroll between screens, and know that there is a possibility that there can be more icons that fits the screen. We know there is no technical limitation doing this, jailbreak tweaks work fine.

Can anyone comment on this? Am I the only one bothered that there is this unnecessary limit in the OS? Can anyone explain what might have been the reasoning behind it?

What is Apple thinking? Where's the logic?