I think adopting the smear that Hasan tortured his dog is weird. Like it's so very obviously a lie, and it's very obviously politically motivated by people who support genocide and racism.
Hasan is worthy of criticism, we don't need to trust IDF groupies to do so.
Edit: On a meta level it's also kind of creepy. Like people either didn't believe this or were willing to overlook dog torture until they disagreed with him politically? That's messed up.