Instead of exploring his relationship with his dog (owner/accessory)
All of this comment points to you needing to gain some emotional maturity. You sound as if you've either never owned a dog or have only ever owned already trained dogs.
I can grab a piece of paper loudly and my dog will crumple as if I've beaten her every day of her life. Never hit her once. Never shocked her with a collar, only ever used the beeps and vibration. All I need to do is pick up the remote and she will cower. Mind you, I shower this dog with love every day and again — I've never once hurt her besides maybe stepping on her tail.
I think you need to exhibit some personal growth here, tbh. If your reasons for disliking Hasan stem from this one incident vs the blatant hypocrisy he'd already shown (like purchasing a mansion) — you need to rethink some things.