They're never going to go that extreme, potential backers need information in order to decide whether or not to back in the first place so putting the marketing fluff behind a pay wall would put a major squeeze on new funding.
At the end of the day it's their forums and they can do what they like but what it really comes down to is censorship, their moderators can simply move anything they consider negative into forums that potential backers can't access in order to present a squeaky clean image to those considering backing.
They already have been adopting this tactic of censorship since a long time. Customers that become of by legit reasons, because the company make mistakes (in purpose or not), are also quickly demonized.
I am not discussing if they should or not the close their doors to potential cusomers, but they used that as sales bait and never followed their word, which decreases their trust bar, in my opinion, like many other things that they did.
What they did was wrong and what they are doing now is wrong too, because has not that objective, not the intent to fullfil a promisse of exclusivity that broken, goes directly against their speech of morality, and respect to ALL backers, including those who were convinced and felt the need to pledge earlier because that, but with the objective to, once again, raise the idea of "enemies all over the place envious of cig, haters, blablabla", so people continue to believe in a holy quest vs. Demons.
But if you want to know my opinion, I think that as more people CIG bring earlier, less chances they have to succeed in the medium/long term. That's why I think they should had to accomplish with their promise and built the wall.
Time will prove me right. It has proving already (and that is why these fans hate me even more) and I don't see the trend changing, since I only see cig, with proud and ego, going directly to a train wreck without ever boring to put their feet in the breaks, to hope to save something at the end.