Although drag and drop support to pin icons on the Taskbar is almost gone from Windows 11, you can still pin or unpin icons to the Taskbar. However, if you want to unpin all taskbar icons at once ...

Alternatively, if an app icon is visible on the desktop, you can right-click on it and select the same option from the context menu. To unpin an app from the Start Menu, you need to right-click on ...