RJ said he created Rose because he felt Finn and Poe had the same voice, but imagine the Rose and Finn conversation about war, but Poe took Finn’s place and Finn took Rose’s place. Poe likes being the hero and does whatever he can to win, but considering Finn is a literal child soldier, he knows all about the costs of war.
Cosmonaut has a lot of really good takes, but I never agreed with this.
Rose is not talking to Finn about how bad war is. She’s talking about how war against the First Order is good, justified and necessary, and that Canto Bight is awful for supporting the First Order, not for supporting war.