Anthony couldn't find himself caring about James' 'threat'. He empathized with the kid's plights, of course, but he was simply too angry to even care about the threat he had made. And the fact that he was assuming that he and Elijah would talk about this like adults, when in reality Elijah essentially just slammed a door shut in his face did not help that in the slightest. Maybe he had just overestimated how much Elijah actually cared for him. And he certainly wasn't overreacting in the slightest.

Anthony certainly didn't want to linger at his house right now, of all places. Whatever. Anthony reasoned that if one of them is allowed to act this childish, the other is too, which is exactly why he just went to head straight for home after the initial shock had worn off. He didn't even know what he was planning to do other than just be petty and childish. Get drunk, probably. Out of spite more than anything else.