Some broody's can starve themselves to death they are so intent on sitting on their eggs, so it's probably not unusual for a broody to look like that. I have to keep chucking my broody LS and the 2 white silkies out of the nest boxes several times a day, but I lift the LS out and they just sit where I put them! Even though their mates are outside nibbling the corn or greenstuffs I've just given them!
And they are not even sitting on eggs!!!
I hope the programme does show a few more people the plight of the battery hens, but many more will still go and buy the cheapest eggs, as they don't care about the chickens living conditions. They'll say after all they are only animals!
Don't get me wrong, I would love every person and animal in this world to have a lovely life, but it will never happen. All the while there are people who buy the stuff, there are people who will raise it however just for the money.