Accuracy Isn't Useful
Accurate statements aren't necessary, or even useful. For example, if your child gets mugged while walking down an alley in a rough neighborhood, then according to law and accuracy, the cause of their mugging was the mugger. Many other people have walked down that alley in that neighborhood and not gotten mugged. But you would still scold your child until they promise not to walk down that alley again, because that's what's most likely to prevent them from getting mugged in the future. You can cause your child to be less mugged in the future by blaming them for their mugging in the past.