This is just anecdotal but I remember when I was growing up there were always a few kids in school who had extremely restrictive parents like this (strictly controlled their TV, phone, time with friends, searched their rooms, etc.)

On the surface, it seemed like it was effective and they had model kids. But in every case I can remember it resulted in the kids just becoming much better at finding ways to rebel (in increasingly escalating ways) that the parents couldn't catch, until they got a knock at the door from the police, or their kid was pregnant, or overdosed, etc.