Back then it was easy for Parents to raise children, once a child grows into the age of earning privacy, parents don't panic allowing the child own it, and most times before a person gets to that point, he is already an adult 😂
But in this generation, children grow fast and their level of understanding is something else. Trying to deny them privacy when they begin to show sign for it might complicate things. I love the suggestion you made, instead of fighting them over privacy, it is wise to use the period when they are much younger to train them in the right way and instill the fear of God in their hearts, then leave them to decide for themselves