Why not update Sony's rootkit with a warning message?

Security researcher Ben Edelman has a provocative solution to the problem of notifying all the Sony customers who got infected with the company's rootkit DRM. Since the system has an auto-update feature, why not update it so that it shows all the infected users a warning message that advises them on how to uninstall the software safely and how to get their CDs replaced by Sony?

Link, Sony Rootkit Roundup Part I, Sony Rootkit Roundup Part II

(Thanks, Thomas!)