Little kids have GENDER.
They don't USE it yet, but they've GOT it!
Therefore; logically...
Matthew 18:3
And said, Verily I say unto you, Except ye be converted, and become as little children, ye shall not enter into the kingdom of heaven.
Actually they do use it but not to the extent they do when adults. Why do the little boys usually end up gravitating to the toy trucks, and the girls to the dolls? It isn’t mere genitals here.