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 was he didn’t care it was a suicide mission or not, as long as he saves the Resistance. The point for Finn isn’t affected because Rose him, seeing as the intention is what matters here.
But I think that, had Rose not saved Finn, he would’ve killed himself and destroyed the weapon and saved everyone/bought 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.
I can agree with this assessment