I agree in principle, but a lot depends on culture and expectations. My nephew had a father from a culture that seemed to expect young men to lounge around, and apparently do very little until their late 20s. My sons, his cousins, were appalled (not sure if they were envious!) as he travelled the world on his parents' money (and they were by no means wealthy). When at home he did nothing.
Suddenly, age 27, he decided to train as a chartered accountant and they financed this. His career took off and he is now, age 40, very well off.
He regards it as his responsibility to ensure that his widowed mother (state + small private pension) lives comfortably, he pays for all her (very good) holidays and 'treats'. His father's family regard this as normal, and as you see, it is discussed openly. Indeed, they comment on my sons' jobs, wondering about them supporting me. They laugh when I say I am independent!