You're conflating 'enabling development' with teaching. One of those things is important at age 5-6, and the other is not - it's difficult to stop children from learning things at that age. There are not 'skills' that need to be imparted before 1st grade, there are behavioral examples that need to be set in a social context.
> That is completely and utterly factually untrue.
You certainly seem certain.. if you study the topic at a bit more length that will go away.