There is nothing "vague" about his Pokimane videos. The intent was clearly harassment. He couldn't even try to hide it under criticism since it was nothing but 12 year old insults towards her. Sure, it was fucking funny because nobody likes her but it was still so clearly against their new rules, that he was warned repeatedly about, that I have no sympathy for him paying the price of it.
I don't know what's so fucking hard for people to understand, laughing at cows isn't a zero sum game. Just because Leafy went after 2-3 people that are also cows doesn't make him any less of a cow himself.