To bash or not to bash, is that the question?
There is some truth in what you say of course, Booker-T, and I am sure there are many exJWs who have moved on - it's not really THAT unusual. And yes, most of them will not be on a site like this.
What this simple line of reasoning does not take into account is how much processing is involved for any given individual, and that would reasonably be dependent on their previous experience with JWs and current ties such as family and what not. We have to recognize that there is a broad range of JW experience for different individuals.
I agree that bashing in itself will not help you move past it, but then again if you don't process the stuff in some way it is just hidden baggage waiting to resurface at some later point. And I say "in some way" because I don't think it is necessarily something that needs years of therapy, it all depends. So you can very well be stuck in both cases, in the one you are absorbed with the anger and all that, in the other you totally ignore it, maybe compartmentalize it in your head and just does not deal with it at all.
No doubt it is easier for some to come to terms with their experience, but when you think you can just apply your own experience toward everyone else in the group then that is just naive thinking. That would be like a therapist going "Well I'm a psychologically well adjusted individual, all you have to do is exactly what I do and voila! Your problems will be gone!" Clearly the skillful thing to do is understand the exact issues in the mind of the individual, making statements of generalization only goes so far. Sure, in principle it is good to move on, but the question is HOW does one do that? Everyone will be different. Some seek out others in this process, some don't. You MAY be able to move past it on your own, but there has been enough cases where people discover years later that they haven't moved past it after all, simply because they just ignored it.