Does this help an intersexed child to be normal?

Sometimes; but most often, no. The children quite often will not identify with the gender the birth physician has chosen for them, and pursue a surgical reassignment to correct this. Virtually always, the intersex person is resentful that this decision was made without any consideration for their feelings or input. Also, the procedures performed often result in genital mutilation, causing physical and/or psychological discomfort and/or sexual dysfunction later in life.