Moral and sociocultural issues involving children are hard.  They are basically always hard.  The normal rules of autonomy and integrity-of-self don’t work – often someone has to make decisions for a kid, like it or not, and a kid’s identity is sufficiently in flux that you can’t use it as a ground state or a backstop.  Very often it boils down to “well, you’ve gotta do something, and anything you do might very well fail catastrophically.” 

Anyone dealing with this, concretely, has my sympathy.

And if you’re using moral cases involving kids as rhetorical sledgehammers, saying “this is obvious and anyone on the other side is obviously awful, you can tell because this is a kid and kids set off all your protective instincts” – well, the best I can say about you is that you might merely be stupid rather than evil.