The person who prefers a process that has the chance to land them in prison is rare indeed. But I'm not sure that's a moral argument, at least not as people think of it normally. Admittedly, there is a school, which I sometimes flirt with, that claims that moral statements are simply a specially coded statement of preference. But outside that context, I'm not sure exactly what aspect of Assange's perspective I'm meant to consider in this context.