It seems like you don't like Hyundai. What's childish is your resort to ad hominem because you disagree.
It's not free labor anymore than the car was free. It's a fix of product that was defective off of the line. The necessity of the fix being evidence of the defect.
Car buyers are not automotive cybersecurity engineers, and they can never be expected to be. Caveat Emptor is a hilarious remark for this situation.