According to the latest reports, Windows 11 has made an independent choice by automatically turning on OneDrive folder backup for Desktop, Pictures, Documents, Music, and Video folders without your permission. This signifies that, whether you approve or not, everything is becoming coordinated with the cloud.
This action from Microsoft fits into a larger pattern where big tech companies cleverly (or not so cleverly) promote their services and subscriptions to users. It isn’t only about Microsoft; there have been instances of Google doing something similar with Google Photos and its storage plans.
Keep an eye on your settings, particularly when you have just finished setting up a new device or updating your operating system. Companies such as Microsoft constantly seek methods to link users with their environments—sometimes without permission.
Right click Onedrive Icon, settings, sync and backup, Manage Backup, turn off what ever you don’t want backed up. At that point all your desktop / document content will disappear (looks like Microsoft linked the normal and Onedrive folders, which is a useful trick occasionally) so move everything out of Onedrive back into your normal folders