Especially if that’s the case, it wouldn’t do anything to merit any of the chipper attitude at the end. All it’d do is offset the ‘revenge’ motive for the trench run, and even then it wouldn’t since the fighters would be unaware.
Maybe the dialogue between Hux and Snoke could be considering their next target, just enough to imply that it’s important this thing be destroyed.
Although, having the base about to fire again would address the apparent “problem” (only for those very aware of the theatrical version in which one star equals one shot) of SKB exploding into a star after it had discharged.