From children's perspective, I think this may solve some realistic problems in the short term, but in the long run, this will damage the creativity and motivation to face life challenges and harm the ability to manage finances, especially if you are a man.
Very tunnel vision sort of thinking there. Parents often teach their children on how to face problems and challenges. It is incorrect and biased to assume to that home grown children are in any way inferior to the ones living on their own or in a boarding.
I say this because a lot of the friends from my generation are struggling financially now because they have been dependent on their parents and even after getting married and establishing a new family, they took a regular amount of money from their parents to pay off mortgages or cover other expenses.
Taking mortgages in such young age would mean that there were financial problems in the family and they have had to take the money in dire situations. If a child does not know to manage the finance then they have not be taught properly. Also setting up a family is a new thing for every person, it will differ how they face it individually.
They've never thought about having another stream of income or one day their parents may not be making money and instead need money and care from them. A lof of hidden problems are there but just ignored. In my opinion, the earlier you become independent financially, the more likely you will be living a comfortable life with your finances. Better to know this and be prepared, if you are young.
Truly financial independence is a myth though and even if bitcoin brings us close to it, most countries in this world does not have the technical infrastructure to allow quick and easy bitcoin use. They are all stuck with fiat and hence the point does out of question.
I am afraid you tried to generalize or conclude something but unfortunately failed. Let me explain. "Very tunnel vision...in a boarding", put my topic aside and let me try to explain your point in another way. Your point is exactly like saying" it is incorrect and biased to believe people who exercise on a daily basis are physically healthier than those who never take a walk". See what your problem is ? You are simply trying to disagree with some common sense by not providing any evidence.
"Taking mortgages in such young age would..." OMG, late thirties and early forties is such young age ? Where does it come from for saying that ? In your comment, you are sending a message very strongly: that a child(actually an adult) is not doing fine is because his/her parents are not teaching them well. Yet, when you say "Parents often teach children on how to face problems and challenges", then later you also mention that "Also setting up a family....it will differ how they face it individually." Execuse me, they are contradictory.
"Truly financial independence is a myth though...out of question." This is even worse. How come you cut all reaons and logic and say "truly financial independence is a myth"? Whether this is a generalized or an individual expression, it is inappropriate. I feel like you are trying to dismiss something that can be concrete while trying to judge something that is supposed to be subject and personal.