Seems to me that the so-celled principled beliefs on this person have caused him/her to actually reject what the Bible teaches. I would like to know exactly when this person believes a child is no longer the property of its parents.
And I would not use the word “property”. I would use the word “responsibility”.
When they leave home? What is you basis for this answer?
“When they leave home.”
And, tell me, does that include unmarried young women, too?