Yeah, to JW's if the organization is rejected it's the same as rejecting God.
Actually, this is not true. All day, in their ministry, JWs encounter atheists. Some of these are less than tactful about how ridiculous and stupid they see belief in God or the Bible. This doesn't ruffle the JW's feathers at all and they smile and go on with their presentation, using the Reasoning Book's "personal interest" questions to draw the householder into a dialogue.
See what happens if someone dare question their Governing Body. Oh, then they get nasty. They'll resort to scoffing insults, name-calling, then make a hasty getaway. I've actually done this. I'll talk all day about the Bible with JWs who come to my door. As soon as the subject of the human leadership comes up and I show them where the Bible disagrees with it, they stop coming. They don't care about anyone's belief in God or Christ, but only in the magesterium of the Society. It's so obvious that the Watchtower Bible and Tract Society is the true God of Jehovah's Witnesses. The Jehovah of the Bible is just a mask they put on it, so they won't look quite as nutty. Just like the golden calf, they try to blur the lines between the two, to throw attention off their idolatry:
And they began to say: “This is your God, O Israel, who led you up out of the land of Egypt.” - Exo 31:4