Errr, that's actually the point of his argument.
neither of them are mature enough to end this. all tony would have to do is apologize (he doesn't even have to mean it!), since "that's what this topic is about"! but no he has to argue moot points all day long because he holds grudges.
honestly it would be in his best interest to apologize. why? because if he does, and stocking keeps whoring for attention, then he has her right where he wants her. that'll just prove she's nothing more than an attention whoring bitch.
of course stocking isn't any better, this topic is just a bunch of incoherent handicaps yelling at each other anyway (guilty!), all she would have to do is lock it and half the drama would be over. if he starts stuff again? oh well, ignore it, move on with your day.
tl;dr SUDDENLY MORONS