Yes, I do happen to understand the meaning of animal abuse.
I never said that slapping a dog in the face is right. I do feel that slapping in the rear is a much more effective way of punishment than 'positive reinforcement'. Believe it or not, dogs aren't as innocent and helpless as you seem to think.

Gee Rex, you scratched up that girl's face. Bad dog, here's a dog treat.

I can see how that will help the dog learn.