I presume that it is being implied that the opposite of compassionate is discompassionate - usually used as a perjorative term.
However it can also be synonymous with "candid" or "neutral" - free from bias, prejeudice or malice or a sincere honest expression.

Buddhist teaching states that "True compassion balances loving-concern with clear wisdom. This wisdom enables us to stay calm and think clearly how best to help, without being carried away by our emotions."

I don't think there is a lack of sympathy or compassion anywhere in this thread for the suffering of the missing child although there may indeed be sincere honest expressions of feelings about the circumstances that brought this about.