I think it was by far an inappropriate thing to say, but heck, my mom used to say a lot worse than that. How do we know he didn't jump on the phone 5 minutes later and apologize like crazy in the next message? That's what a lot of parents do, yell and then apologize. It sounds to me like he had a very hard time getting to the phone, and Kim makes sure that Ireland misses the phone calls. People make mistakes. I hate to judge him on one phone call.