[dipper does, at least, move off of Jay after that little speech. with only a slight punch to his shoulder. he makes no move to try to get Mabel off but hey, at least it's. half the weight??]

Have you got proof other than Craftly's word? And if you do-- [that if is a big if, though, since he's not convinced this isn't a bum deal] Do you seriously think keeping that from everyone and killing them in secret is any better than telling them the truth? If all of this is real, people deserve to know what's going to happen and why.

[he says people and means ... himself, mostly but-- also, people. sorry he is a big believer in Telling The Truth about horrible shit]