That will copy the items, not make symlinks, but I think it'd just be a matter of adjusting the command to tell it to make symlinks instead of copying.
This is probably something where I'd just ask an AI to write a powershell script that uses the mklink command on all the files, and loop through all the folders to add all the links to all the folders.
Assuming you need to add all the same links to all the folders. You'd give a list of paths of the files, and the folders (using right click Copy As Path).