That’s the point for Poe, that he can now see when a suicide mission is a suicide mission instead of just an opportunity for heroism. The point for Finn is he doesn’t care if it’s a suicide mission or not, as long as he saves the Resistance. The point for Finn isn’t affected by Rose saving him either, because the intention is what matters here.
But my interpretation of the scene is that, had Rose not saved Finn, he would’ve killed himself and succeeded in destroying the weapon and therefore saving everyone/buying them more than enough time. If this was the case, then Rose was very selfish by saving him.
The situation in the end works for every character except for Rose.
Rose is just following through on Poe’s assessment. You could just as easily give that moment to Poe, their intentions are the exact same (and it’s not a selfish act, Rose didn’t “stop him,” she “saved him, dummy”). The reason it’s given to Rose is because that’s her role in the film, the angel on Finn’s shoulder guiding him toward the good. She taught him to become a member of the Resistance, which he follows through on, but he still has more to learn. This is just her next lesson.
Again, it’s obvious the filmmakers’ wanted you to be on Rose’s side here. It’s not something that I thought was an issue when I saw the film, but if you misinterpreted that then I guess they needed to make the pointlessness of Finn’s potential sacrifice clearer.
Their intentions are not the same because Poe was trying to save the most amount of people by calling off the attack.
Rose decided that saving Finn was more important than the rest of the Resistance.
What you’re saying doesn’t make any sense.
Poe: call off the attack, save everyone in the skimmers, let the ram blow open the door
Rose: save Finn (the only skimmer not yet falling back), let the ram blow open the door
The intentions are exactly the same. Poe explicitly orders Finn to fall back. Rose just forces him to.
Rose spells it all out, what’s important in winning the war is saving people.
I can see your point, and it does make sense. But I think that the circumstances are different enough to make their intentions different.
Poe had a plan to try to save everyone. Then he saw that his plan would not only fail in doing so, but it would definitely get all those who were involved in it killed.
He called off the attack hoping that they could still find a way to destroy the weapon and live to fight another day, and in doing so, saving the most amount of lives he possibly could.
Finn then found a way, but it would cost him his life. However, since he’s now willing to give himself to the cause, that’s not a problem anymore. And when he was almost there, about to succeed and save everyone, Rose saved him, spelling certain death to all the rebels that Finn would’ve saved.