It is also the job of an individual. Immaturity is a choice. A choice to be adult or not to be an adult, and to pretend one is an adult when they are not is also immature. It's a vicious cycle each individual is in full control, despite their awareness of it.
Ah yes, great strategy. After they've been fucked over by a generation of bad parenting, bad governing, bad education and bad economics, go and tell them it's their fault and how they should pull themselves up by their bootstraps.
What could go wrong? I'm sure they'll vote rationally and responsibly and not in a vindictive way to watch the system burn to the ground. /s
“A society grows great when old men plant trees in whose shade they shall never sit.” — Greek Proverb
What our society did instead was cut down the tree to save money on upkeep and increase the value of their property. Sorry, but you reap what you sow.
Of course children will react with emotion, which is why the only alternative is to treat them as an adult. Point out they can end the cycles they were born into by identification and effort. There is no other way, it cannot be done for them.