> the machine has determined it's unsafe to serve the contents
Wouldn't that mean, though, that the Kytch device could be working around the issue in detriment of the patron's, or "end user", safety?
The franchisees certainly were very happy with Kytch's reduction in their maintenance and downtime cost, caused by very temperamental, ill-designed machines. Franchisee's are clearly victims of a tightly controlled McD ecosystem (sounds so Apple...). But if the machine is operating in a way that could harm users, even if harmful workarounds is just 1 or 2 out of 30 other harmless issues Kytch monitors, fixes or clarifies, still, it would absolutely justify the take down!
Imagine a batch of people who suddenly get a bacteria from unpasteurized ice cream from a Kytch-hacked McD machine. How could McD justify knowing their franchisee's were installing a device that could put their patrons in risk of eating a spoiled dairy products? It's a backdoor for a health crisis, a PR nightmare and endless lawsuits. Even if it doesn't know for sure the device can be blamed, the liability is there.