I’ve heard this narrative before but have yet to see it in real life. All the homeschooled kids I’ve met were years ahead of their peers in every respect, especially in social development. They carry themselves like adults and interact with adults as a peer at 16 or even younger.
I suspect those who homeschool because they think their family and community has something much better to offer than the standard fare often do.
Healthy families beget healthy children, regardless of schooling option chosen. I’d argue that unhealthy/unstable families are the ones whose kids would benefit from being educated outside the home.