In more individualistic countries, that is the case. Living with parents and relatives is common in more family-oriented cultures. Even in Europe, the mostly Catholic countries still have people living with their parents. But for Protestant and individualistic European countries, they will judge you harshly for it.

I have to say though, I find that some people who expect anyone over 25 to even move out are a bit simple minded considering the cost of living crisis. You have to have a good job to afford to move out. It is unrealistic these days for many people to do so because of housing crisis. Heck, even with a good job and good pay, the current expensive economic situation mitigates all those advantages! I had a manager who still lives with her parents. My best friend still lives with his parents as well, long after he turned 18and working for many years now. And the more simple minded individuals expect the old ways to still be applicable, but those same individuals actually don't have savings, unlike people who still live with their parents.

Ideally people should move out of home because it is part of growing up and maturing, but the current exploitative system prevent most of us to fulfill our own potential.