My friend has a therapy dog and he explained me why. Any raw meet contains worm eggs, which could be destroyed by boiling. Long freezing destroys them as well, but vitamin structure is destroyed as well, so, there's no reason to freeze. You provide your dog with medication three times a year, but that is targeted against particularly dangerous worms if there's any, medication itself poisons your dog's liver and it is strongly advised not to do worm more often. But, your dog is reinfected only two weeks after with worms living in the guts. The majrity of worms living in guts and in the liver considered not dangerous, in fact all humans have them as well. Or, you think you don't? Then, you must be an alcoholic (LOL). We consume many products which regulate number of the worms (alcohol, garlic, many herbs, etc make worms leave our organisms through the annus) and never have any issues with our health, unless we are underweight, or seriously ill. I provide my dog weekly with 5-6 cloves of garlic forcing them into her throat and another good thing - raw pumpkin seeds, crushed in a coffee grinder and admixed into her meal. I always consume the same myself just in case, I like salads with crushed raw garlic, and pumpkin seeds are simply tasty, they are aphrodisiac, and availabe shell free. It something happens with worms in a weak organism, like they know that it is going to die, and worms take the best chances to reproduce. They start to reproduce in huge numbers. The death rate in children and puppies is high, that's why it always recommended to treat young organisms. People in hospitals are far not so healthy, many of them are very weak, and breeding worms will start to poison their organisms if many, even bring to death.
So, don't feed any kibble, just cook what you feed your dog, boil it for the length of time you would do for yourself. People of ancient times started to cook meat not for taste improvement, but exactly to prevent worm and bacteria infections.