I ask the above because of my personal experience. As a born-in I was naive, socially inept and had never really thought deeply about anything.
I was also unable to accept arguments based upon reason and facts.
Just like a child.
It was only after freeing myself from the Mind-control of the JW cult that I educated myself and matured as a person to being (almost) an adult.
JW's attitudes and their inability to debate in any meaningful way, (they could start by actually listening),means they have not grown up.
As another born-in, I too was naive (to a hi degree, though I've always been very observant and a fast learner). Socially I was awkward.
In my case, however, I developed a lot of independent thinking. I had to, that's how I survived. I learned a lot by observing people in the congregation's behaviors.
Once out, my attitude was one of freedom and wanting to make up for lost time, so I started trying to learn as much as possible as fast as possible. However, later I did learn an important lesson, which is that it was important not to completely dismiss my JW past. For once, not everything they say is necessarily untrue when it comes to the kind of people one should let in their lives. The part that they get very wrong with that is that they claim that they are the keepers.
The JW way of thinking, the tunnel vision, the naive explanation for things, the black and white mentality, all those things can be removed from your life. It is possible to learn to think differently. I did. However, emotionally, the negative influence of that organization is always going to haunt me. I try to keep it to a minimum.
But yes, as an ex-JW with now plenty to show for, I can definitely tell you that we do grow up, we do get rid of their way of thinking and acting. It's possible, though it feels very uncomfortable at times. Just make sure not to become what they claim you should if you leave them. I didn't and I am way happier and a much better person once I sent them to hell.