> After 20+ years being parented and pushed into team work, is it so terrible to consider enabling free agency and experience?

This is an entirely western or American POV. I have no idea if it came from media (movies/books telling us we should move out as soon as possible) or from advertising (because if you can get people to move out you sell more stuff. More housing, more cars, more every day appliances etc...)

In plenty of cultures there is ZERO stigma of not moving out of your birth home until you get married and that might not happen till your 30s or 40s. It's just normal.