No, it's a joke.
In an outdoor on-the-spot interview someone asked him how XAEwhatever was (saying it how Musk pronounced it in an interview) and Musk was confused for a few seconds like "huh.. what..?.. OH YOU MEAN MY KID HAHA! Yeah he's fine."
So he was just trolling and getting his kicks while everyone took him serious.
Some. Putin won't fuck with the Pope though. You know why you never hear about Putin threatening to de-nazify Vatican city? That's right, the Secret Archives.