The link opened just fine. I read it and think that it probably confirms what most yorkie owners know - yorkies are special
Our vet and breeder recommended letting yorkies free feed with food available during all waking hours. Since yorkies tend not to over eat like some breeds, they will self regulate and get food when they need it. Part of the reason for this is blood sugar regulation. It definitely has worked for us although were we a multiple pet home this would be a challenge as we know from experience. We used to have a cat and a hoover-like mini dachshund who could down leftover cat food in milliseconds.
The bigger debate I have seen for yorkies is what to feed them. No grain? Kibble? Fruits & veggies? Meat? Maybe the energy discussion would lend some insight into the best balance of foods, which of course would still need to be individualized to each dog.
Interesting.