I agree - this is the type of vulnerability that, assuming Apple is extremely careful about protecting their signing key, is only exploitable by court order or similar state request. This crypto implementation on iPhones and the like isn't really designed to protect against that, it's really more to prevent the common criminal from accessing your personal data. Apple already comply with law enforcement requests to access iCloud backups and other such data, so assisting with this passcode crack isn't really much of a stretch.