Earlier quoted context omitted.
It really is. If the law is hurting people, and breaking the law helps people, it's completely reasonable to use that argument to morally justify your illegal behavior. I'd be interested to hear your argument why it is not. Edit: Though to be clear that wouldn't work to justify all your illegal behavior, if that included like hypothetically trying to have someone killed.
Since you specifically requested my argument... I'd agree that lawbreaking is a reasonable moral choice, but not in this case. Moral lawbreaking, in my view, is done when there is a clear benefit or reason to the lawbreaking. And by clear I mean clear to a reasonable and moral person, and not just a speculative personal opinion. Given that frame of reference, I would argue that (1) the notion that online drug dealing…
That's fine; I disagree, but I'm not interested in litigating it here. But your original parent actually was arguing along those lines, cf. "rat poison" et cetera, so perhaps you'd like to retroactively not reject that as "not a reasonable argument".