[It shouldn't have to be, he wants to say. People shouldn't live separated like that. Common ground and understanding is the way of things, not segregation.

But he doesn't know Ambrose's world and he understands he's just projecting his own feelings onto it, based around a vastly different sort of separation. Those who wield devil fruit powers can come from all castes. The true power is military, is political. It has nothing to do with the issues Ambrose faced.]

I see. I suspect here you'll find people from worlds where that wasn't the case - but it's different everywhere. Certainly different here. At least you won't have to face that again.