The statement is likely true.
It is because when a parent is controlling, the child is likely to be afraid of their parents as they are strict and the child is likely to obey on their parents wishes, causing them to have low self esteem as if they weren't able to perform what their parents ask of them, they likely feel down, feeling of failure, or have no confidence to one's self.
On the other hand, parents who are overindulgent tend to have a children who have high self-esteem as they let their children to do freely what they wanted to do and provide what is best for them by which it gives the children confidence to themselves and not being afraid of the things they wanted to do as they are confident.