If Poe had said something along the lines of ‘Retreat, nothing can stop it now!’, then it would have been clear that Finn was acting out of pure unthinking hatred for the First Order.
“The cannon is charged, it’s a suicide run! All craft, pull away!”
“Retreat, Finn! That’s an order.”
“Finn? It’s too late!”That doesn’t imply a suicide run could not be successful. It might only imply Poe is not willing to sacrifice the few people they have left. Additionally unlike Poe Finn knows the technology, and obviously feels he has a chance of taking out the weapon.
Dre, come on man. Do you like having the same argument over and over? Because I don’t, I really really don’t. I mean I guess I was asking for it here, but I was trying to demonstrate a separate and specific point (i.e. what NeverarGreat personally thought would clarify the scene for him is basically already there in slightly different wording).