To my understanding (keep in mind I'm not a lawyer, nor do I live in the US). That number is supposed to be egregious, at that stage of the conversation both sides are supposed to say "dream scenarios" kind of thing, knowing that it won't happen, and slowly it gets worked down to the real number.
Destiny knows this, however, he's trying to paint her like she actually wanted 15 million, just like how he's misrepresenting Pxie genuinely being depressed/suicidal as her suicide baiting.
It's important to note, that Destiny fully knows female and male suicidality are completely different to each other.
Men are far more effective at killing themselves, while women often play around with the idea publicly, give it a try, often it fails, and try again.
However, this doesn't mean that the suicidality was "false", or she was suicide baiting, is it attention seeking? yes, but because there's something that is bringing her extreme distraught, doesn't mean it's fake tho.
Women just act different than males when they are suicidal. Funnily, Destiny's constant depression baiting, and suicide jokes, are far more female coded than male. However, I just think that it is because Destiny genuinely larps that he's depressed/suicidal to manipulate people. And well, him being so extremely low T that he might as well be a woman might play a role into it.
