Demand posting of "dangers of consuming raw animal food"

My issue is that In-N-Out has made it known that they will not post signs stating the "dangers of consuming raw animal foods." In other words, they have stopped allowing customers to order their burgers MR, because they state, "we're afraid that posting those signs will be unappetizing to other guests." My goal is to make them post the signs-as most, if not all restaurants do-and revert back to allowing your loyal customers to order their burgers the way they would like it.