Isn't this mindset exactly the problem in America?
Every legislation is more focused on undoing what the previous one did instead of building upon it.
So we're never moving forward, we're perpetually going back and forth.

Thanks. I also found it invaluable once I had understood how it works and how to use it.

Yes, certainly children don't spend much time thinking and worrying about things and are dedicated to absorbing everything around them: sounds, smells, languages, etc.
So, they're just absorbing everything 24/7. And they don't have their "native language" interfering with learning a new one.

Of course not, and I also mentioned that in the video.
But what I'm trying to point out here is how with small changes in our daily efforts we can reduce the time to reach fluency by several years.