This is better than euthanizing them and just throwing the bodies away or burning them. These animals are predators and need to eat meat. The headline makes it sound like they’re feeding dogs and cats to them, but the article only mentions small livestock/pets like chickens, rabbits, and guinea pigs.
Ideally you wouldn’t need to euthanize any at all, but if nobody steps up to take them there aren’t a lot of options that aren’t also cruel (like overcrowding them).