risk vs reward. Have you spent any time around a 3 year old? They are super uncoordinated at this age and can't take off a sock without falling on their butt. GP clarified that it was supervised cooking with low heat and without oil, so that sounds safe to me, but certainly wouldn't have any other pots with for example, water boiling around since they don't have the experience to avoid it and the results can end up catastrophic.