Earlier quoted context omitted.
You seem to be in the know. What on earth is in a Jack In The Box taco?
It's not really about being in the know, it's common sense. Could McDonald's survive if they were selling garbage meat? I mean,it's possible. But why not just serve 100% ground beef exactly like you say you do, and charge consumers accordingly and make billions of dollars over many decades.
It seems like they could, since it appears many commenters here think so (there is no PR cost to serving bad meat if everyone thinks you are)