This is not always the truth. My DD was a pitcher and on every team she played for, she ended up in the #1 spot. She never wanted to be the #1. Her dad was AC for a couple years, then HC. He was always trying to find a #1 because she really didn't want to be. He would give other pitchers every chance in the world, because it was less heartache for her NOT to pitch. He even had 2 pitchers that he planned on pitching 80% of the time. Sadly, they threw hard and were inconsistent or always injured, so she ended up #1 anyway. She now HATES pitching. Not all dad coaches are what you imply.
She didn't want to pitch but still pitched...now hates pitching. I wonder if it would be different if she wanted to be a pitcher? Every single team that my daughter has played on, the coaches kid played the position they wanted. Normally it was ss, catcher or pitcher...could there be exception...yes.