Exactly. You stole my thunder.
Most young people may want to live on their own, but sometimes they have no choice. I know married couples who’ve had to move in with parents (due to job loss, illness, etc.). Also, it’s a matter of tradition - in some families, continuing to live with your parents and siblings is not viewed as shameful. In the old days, that’s how people were able to save money and get back on their feet.
Some of my relatives continued to live with their folks into their older years. They worked and brought in money, often more money than their parents earned, and helped them pay the bills. I lived with my folks until age 24. I worked sometimes two jobs and was able to build up a nice nest egg. My mistake was marrying someone who wanted to live on his own starting at age 18 and never saved money.
In a healthy living situation, even in my youth, my grandparents lived in an "in-law" space with my uncle. It can be a smart deal financially, and you can have grandparents helping with the younger generation and the children learning their responsibility to help others and respect other generations.
Rather than articles that take this as a negative, I'd much prefer seeing articles about how everyone can benefit from multi-generational homes.