I don't disagree that people should put an identity to online comments many times. But I do think anonymity online is an important thing and should be allowed.
While Apple must comply to remotely delete the app, I disagree with this aspect of the ruling for the example I previously stated. Also, hammers are great tools but can hurt people; we don't outlaw the hammer, we outlaw the behaviour.
The difference between a hammer and Secret is Secret's only use is for (in Brazil) a prohibited behavior.
While you can assault someone with the hammer, it still has other legitimate uses.