...Young children learn in an unconscious state of mind. They are learning and don’t even know it. .....
Oh, they know it. What they don't know are words like "consciousness," "learning," and "education." Guess why? AGAIN, you are mistaking first and second language acquisition. Crawling infants all learn to stand and walk (aside from those with some physical impediment) without creating a powerpoint presentation about their progress, but who will win a footrace, that infant or a 25 year-old adult? A 30 year-old man who is 6'10" and has been playing basketball for 20 years isn't growing at all. His 5 year-old son is growing very rapidly. Who do you pick for your team right now? A very young child necessarily has fewer and weaker neural connections and undeveloped pathways. He therefore has a vastly lesser capacity to learn and retain new information, a smaller and different working vocabulary, and actually takes much longer to fully acquire new aspects of language and usage (though, owing to natural circumstances they usually achieve greater
long-term success if input remains constant and becomes more complex throughout the growth process). Adults have capacity, experience, and neurological advantages to language learning that young children do not. Adults are often, in the end, less successful in fully acquiring a second or third language due to affective issues, limited opportunity and exposure, and complexity of motivation that successful child-learners do not face.
The point of the OP, which has completely escaped you, is that "oh, I'm too old to learn a new language" is nonsense and "kids learn better" is bullshit.