In this film they learn of the planets existence half way through and then throw up some projector schematics while cracking jokes about its size and how theres always a weak spot. Kinda lame.
People keep on railing on this scene, but I fucking loved it. To me it was a supremely economical scene. I've seen comments like "WTF? They come up with a plan to blow it up in 5 minutes? That's dumb," when I'm thinking in a single scene they managed to clearly explain to the audience exactly what is going to happen during the climax, what characters are going to be doing what and why, and in a scene that includes most of the primary characters and is also entertaining on its own merits. Now the audience knows what Han, Finn and Chewie need to do on the surface, what Poe and the X-wings need to do, and understand why the characters decide to adapt when things aren't going according to plan.
And on top of all that, it was a Star Wars as hell scene. Group of characters we like, working together and coming up with a plan, and going to execute that plan. It was one of the scenes that made me think "Fuck yeah! Star Wars!" during my first viewing.
Eh, not quite. First, you can read his speech metaphorically as opposed to literally. Second, he's not exactly a reliable source, particularly when he's spouting propaganda to his minions and, third, even if he thinks it's true, how do we know it's true?
It's pretty damn easy to discern what is pure propaganda in that speech (The Republic, Leia, and her Resistance being evil) and what's legit (they are going to blow up the Republic's shit because they don't like them). Why would we have any reason to think that he is lying about blowing up the Republic's senate and fleet when we see several planets and the ships floating in orbit destroyed?