Hmmmm. I think some people are hoarding under ten, and others are not hoarding over ten. Everyone has a different level they can manage, or they should have. Some people should not own a living critter.
Now I have a number of dogs. I have to go home and make them their turkey, egg, and cheese sandwiches yet tonight. For people that think anything over one or two dogs is hoarding, it is funny, but how many times do you have someone with one dog, cannot get him on the scale for weight, is way overweight, needs to be anesthisized to have the toenails trimmed, muzzled in the waiting room, etc, etc. You would think that with just one dog, that dog could be well trained, and well socialized, well exercised, etc.
My worst dog is an angel compared to some people's dogs that have just one or two.