the limits of freedom of thought... for agnostics

A short while back the topic of the limits religion places on freedom of thought came up in the comments section with respect to the prohibition of studying idolatry or heretical works. What happens when the shoe is on the other foot? An article (link) in the New Humanist explores raising children in a "mixed marriage" between a religious Christian and a free thinking agnostic. When the agnostic parent discovers his child reading the Bible and taking the idea of G-d's existence at face value, he wonders what to do about it.

The dilemma remained: what if all the science and fantasy and comparative metaphysics fail to do the trick, and Christian literalism, despite my efforts, works its magic on my children's minds? Call me intolerant, but I'll admit it: I don't want to tell my children what to believe or not to believe, but I would be displeased and disappointed if they were to embrace conventional religious views. I just would be. Isn't there a more direct way, I thought, to militate against that outcome?

Heavens to Betsy! (though "heaven" is maybe the wrong word in the context of an agnostic's surprise) -- a child may actually take advantage of "freedom" of thought and turn towards religion, much to the chagrin of his parent(s), and we would not want to let that happen. In fact, we must take steps to ensure that it does not happen.

So who is the overprotective parent: the religious father or mother who does not want a child reading certain books or watching certain programs because of their negative influence, or the agnostic father or mother who fears his child actually believing in old time religion and therefore does their utmost to prevent that from happening? Narrowmindedness is really all in the eyes of the beholder, is it not?