The President of the United States is not the fucking Commander-in-Chief. People do not elect a Commander-in-Chief.
The President of the United States is the Commander-in-Chief of the Armed Forces. That's it.
If you are not a current member of the military, he is not your Commander-in-Chief. He's not even the Commander-in-Chief, because that title is not applicable to a vast majority of the country.
If you're a journalist making this stupid flub, you're promulgating a dangerous error. The difference in context is not minor. It is the difference between a Republic (no matter how tenuous) and a Military Dictatorship.
It's telling that the President's own Press Secretary enjoys using this turn of phrase. But that doesn't mean you have to follow her deliberate propaganda with your own acquiescence.
Get it right.
And start acting like citizens, for goodness' sake. You're embarrassing us in front of the rest of the world.