Perhaps the ad infers that the bones are simply ground up and used to fabricate the "chicken-like substance" that form the substrate for their nuggets?
Haven't been to a KFC since Popeyes opened around these parts.

I saw a local TV show about people raising their own chickens for food. The one guy stated it was more natural, then talked about his hybrid chickens who could hardly keep themselves upright because they have been bred for more meat. Natural, my ass.![]()
What's so hard about eating chicken breast off the bone?
Unfortunately, I sometimes feel like my ass has been bred for more meat! :(
No thanks....we have Bojangles around here which is waaaaay better than KFC anyway.

.Oh, yeah! It's been 27 years since I had Bojangles, but I remember it well
Yeah, and Popeye's alone decimates everything KFC. IMO, the "C" in KFC is about as relevant as the "M" in MTV.