Pump your brakes, here. clarkevans didn't say why the pediatrician recommended the switch. Maybe his four year-old was struggling with a weight-related issue? Maybe it had to do with trying to encourage increased milk consumption (clarkevans says she "more than doubled" her consumption). Or maybe you're right, and the pediatrician just wasn't up on current information.

Regardless, I think you should be a little more careful when making that kind of claim without any other additional information.