What are "kids"? and what "extreme" are you talking about?
People these days constantly say that teens are idiots or that everyone under 25 is stupid AF. You yourself spread vile lies about "undeveloped brains" in order to propagate the myth that young people are mentally deficient.
Forcing young adults into a years-long artificially extended childhood where they have zero rights and their sex lives are criminalized is not giving them a better life. It's creating a kind of hell for them. That's why they're depressed as hell and killing themselves in record numbers.
Toddlers have child brains. Teenagers have adult brains. Puberty does that to a person. People learn and grow with experience. Legally and socially preventing young people from experiencing anything retards their growth. History is full of examples of 16-year-olds doing great. but in 2023 we make sure that no one believes that's possible, because stupid brain myth, or vague nonsense about "mental maturity"