Not "just a theory", I think you are describing reality as it stands, and very usefully thank you!
When I was younger I knew my judgement was erratic - sometimes good, sometimes poor. But, without knowing anything about MBTI, I knew that my judgement was a slow-burn. I knew I had to very gradually accumulate perspectives on the world, and build up an understanding of everything, piece by piece, and that later on in life, it would all make sense.
Ne naturally wants to be as open-minded as possible, so that nothing is missed; the best solutions are always seen, somewhere; and you never want to accept something simply because someone else accepts it. You don't want to discount any single viewpoint, because that would hurt the person holding it without knowing for sure whether it is valid or not. You give extra weight to obscure ideas because you want to look at them properly, when no one else is. So in Ne perceiving mode, you are not judging - you are just taking things in. But after a while, you have too much information and worry that you might be led the wrong way, so you crave some time to make sense of it before going further.
For that reason, I believe ENFPs (and perhaps ENTPs) - especially when young - exist in a permanently quantum state, with 10 different ways of seeing every subject. I know that I learned to evaluate information on the basis of multiple viewpoints, and had ways of keeping all in mind, while gradually investigating them. I found ways to juggle them and switch from one to another, before I knew which ones were valid or realistic. So a young ENFP can be easily led into wild, silly ideas - not because they are silly, but because they want to see everything, before coming to their own judgement on it later. That might be musing randomly while doing some ordinary solitary activity, or daydreaming, or in your dreams at night.
One by one, over the years, my prophecy proved correct, in that the balls gradually fell into the right places, and I began to connect up everything that I had experienced, and make sense of everything. So throughout my 20s, 30s and 40s, in my private musings with Fi, I had a-ha! revelations about all sorts of things, as I connected up the dots and put them in perspective. (I've developed a habit of saying out loud, in a whisper or quiet voice, some conclusion that I'd suddenly reached, which I realise is eccentric - but serves its purpose!) It might be surprising to people who only know younger ENFPS and think them foolish, to learn that older ENFPs can be very wise, because of the slow-burn of Ne-Fi. I am glad I did nothing by the book (usually threw it away!), and refused to believe things just because other people did, and I am glad I had the patience to accumulate viewpoionts (Ne mode) before making judgements on them (Fi mode).