If the coffee is overly hot and multiple people have been severely burned, at some point, the company selling an obviously dangerous product and handing it to p

If the coffee is overly hot and multiple people have been severely burned, at some point, the company selling an obviously dangerous product and handing it to people in cups that are flimsy enough to crush between your legs is partially to blame. What if the coffee was 220 degrees and still boiling when they hand it to you, but you warn people on the cup? You still don't see any culpability? I would imagine the legal cases decided that McDonalds was not taking reasonable precautions to account for their much hotter than usual coffee. No amount of written warnings or even signed waivers will protect you from negligence, at least in most US states.