F.U.D has been used for
Now that it's been identified, It's a only a matter of time before the interlock is circumvented.
MS used a similar tactic with Windows 3.1 to kill off DR-DOS. Windows had encrypted code which checked for a non-functional piece of data in DOS, and if it wasn't found, it display an error message to the effect of: "Your system is not running genuine MS-DOS. System stability may be compromised"
There's no reason for it other than to boost profits. If they weren't overcharging for repairs, people wouldn't see the need to seek out third party repair providers.
This is also why I only drive older cars.