All I know is, the terrorists of the world are all laughing their asses off and buying up iPhones right now. I have been an iPhone user for a long time now. I never knew my phone would become useless junk if I put the wrong password in 10 times. I guess if for some reason you forget your password, you have to just buy a new phone?? What happens when your little kid really wants to play the game on your phone and tries to get in by guessing passwords? You have to buy a new phone??

The data auto-erase security feature is turned on or off in the settings in ios9. Additionally, after several incorrect passcode attempts the system creates longer delays with each unsuccessful attempt ending up with, IIRC, an hour delay on the 9th attempt. So you really have nothing to worry about when it comes to little kids attempting to enter incorrect passcodes.