People, what do you think about the children who give answers like an adult? Behave like an adult?

https://www.youtube.com/shorts/352HZmmK8yM

This is the video that I saw, and the answer the girl gave is a complete adult answer. She is just a kid, not a teenager, not an adult even. But her answer is like an experienced grown person rather than someone of her own age.

I found that odd. It's as if they have been trained to give such answers.

I believe natural behavior must not be suppressed.

Good that the kids mature quickly.
I don't care at the moment.
Nope. I am not good with that. Mental age should be as close to the physical age as possible.
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When talking about mental age, I am not talking about wisdom or values. I am talking about behavior, attitude, and other things that change with age. For most of the people. A child should behave like a child, is what I am saying.
People, what do you think about the children who give answers like an adult? Behave like an adult?
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