I know I've definitely seen posts abt this before, but I can't get over how much the 'Jordie' in Kaz's head is just... not Jordie. Like obviously it's not, bc he's dead, but it's also not even accurate to Kaz's memory of him.
Jordie had come for his vengeance at last. It's time to pay your debts, Kaz. You never get something for nothing.
But he could hear Jordie laughing. No, little brother. No one is stronger. You've cheated death too many times. Greed may do your bidding, but death serves no man.
While Jordie was no stranger to grandstanding statements, and one might argue Kaz actually picked that habit up from him ('The city is winning so far, but you'll see who wins in the end' for example), these aren't the sorts of things he'd have said to his kid brother??? Yes, he could be arrogant, and he's snappy with / acts superior to Kaz a few times, but as far as we see, Jordie is mostly very good with Kaz; he has a remarkable tolerance for/patience with him, especially for a newly orphaned thirteen year old. Kaz admittedly comes across as a quiet kid and is pretty compliant; he rarely talks to anyone except Jordie and Saskia, he seems to just watch for most of their interactions with 'Hertzoon', he largely does as he's told and doesn't wander off, but he's still like... nine, and wants to do stuff like see the magicians and make all the dogs walk at once, and sulks when Jordie stops him from doing stuff and makes him stay inside. We also see Jordie pretty frequently lying to Kaz to try and make him feel better. But this mental-Jordie is not a comforting presence. The start of SOC is literally set up to make you think Jordie is someone that Kaz has swindled or betrayed, that he fears will come back for vengeance, so it's a big 'oh wait wtf' moment when you realise that he's not a rival gang member or anything, he's just his brother, and it wasn't his fault. But you wouldn't know it! Kaz wants 'Jordie's' voice silenced 'forever' and seems afraid of it, almost— at least, it turns up in vulnerable moments. He thinks that 'paying his debt' (i.e. taking out Rollins) will get rid of it. (Sorry hon. It won't.) Kaz thinks at one point that he still sees Jordie as "infallible" and looks at him through the eyes of the child he'd been, but in other scenes he's glove-puppeting 'his brother' to punish himself. I guess he still sees Jordie, even in death, as the ultimate authority figure, and to cope with guilt/stress/grief he imagines that this is something he's being compelled or commanded to do, and that when he does it he'll have redeemed himself, when really it's just desperate flailing to get the closure he couldn't have. I'm sure he knows goddamn well that this isn't actually what Jordie wanted for him ('You'll go to school') and that's why the mental 'Jordie' is really off, because Kaz knows its not really the will of his brother— it's just him. It talks like him! He doesn't even try to imitate the real Jordie! It's just Kaz, alone— but he's never really been able to come to terms with that.