I always find it amazing how many people really misunderstand their 'right' to free speech. So many people seem to think it means they can chat about anything they like, anywhere. And that's simply not true. Even when you're a publicly held venue, there are limitations on how and what you are allowed to discuss. If you don't believe that, I suggest looking up the legal concepts "hate speech" and/or "fighting words".
When you're using The Escapist's forums - something that they own - they have the right to dictate what is acceptable and non-acceptable topics of discussion. And as Virgil stated, if you're in disagreement with that, they invite you to go elsewhere.
And frankly, I'm aghast that somehow pedophilia became of the "Cause célèbre" of some of the people disagreeing with the new rules. Out of all the things you could have possibly chosen as the basis for your arguments, you went with that. I think you'd have had better luck trying to convince the moderation staff that the "using large amounts of ... and CAPS is against our policies" rule is arbitrary. Even though fairly universally disliked in chat channel and forums, the general prohibition of it is based upon the perception that it's considered shouting and therefore ill-mannered; and I suppose an argument could be made that that isn't a universal perception. However, it's still the forum owners right to tell you not to go nuts with the caps; just as they have the right to tell you what you aren't allowed to discuss here.
Unfortunately, whenever rules are modified, the 'rules lawyers' come out of the woodwork to pick apart every line. Perhaps the thing to remember here is that the forum rules are not a legally binding contract, and you should focus more on the intent and spirit of the rules, and not dissect each sentence for possible loopholes.