In general, there are lots of misconceptions about child services. Truth is there are lots and lots of shitty parents, and there is never a qualifying test to be parents. Read - physical, and sexual abusers. I know a friend of my daughter who was able to get help from child services when their dad threatened her mom for her mistakes. Child services are not there to snatch a child from parents and place them in a foster home at the drop of a hat. They help thousands of kids who are stuck in shitty situations. Also, its not just child services, teachers, doctors, nurses - all ask probing questions when a kid reports injury. If a kid tells the doc my dad pushed me in anger, there will be an interview to get the facts right. Its a framework that puts the wellbeing of a child in the center. Lets not demonize the entire framework.
I really feel bad for people like your friend. So, he took his son to India to have a free hand at him? How does this ensure he is not spoilt, and how long can he go on beating his son.
Child services should not be the reason a parent chooses not to physically or verbally abuse their child.