Actually, meat produced these days has a lot more fat than it used to, sometimes as much as 70% from what I've read. Also, many dogs have dietary and or health issues which preclude this BARF, like Hamish for instance.
I don't get that part of the BARF philosophy to be honest - the only chicken wings round here are Tesco value range, probably pumped full of antibiotics and hormones anyway, certainly choosing to feed kibble isn't because of multi million pound companies research - very few people who do feed kibble here feed the ones full of additives!
I think that's what pisses me off about the whole BARF thing, there's a real smug thing about it, and it doesn't help. It's really counterproductive to say to people that they are doing the wrong thing for their pet, especially when they have put as much thought in it as most have, but it's assumed they haven't. It is possible to just diasgree with the method, after having looked at it.