That statistic is true but unrelated to the reasoning behind Occam's Razor.
The point is that not enough meteors encounter the Earth to hit one stationary person in all of human history, let alone a speeding jet. The only recorded fatality in 6000 years of written history was of a dog in Egypt a hundred years ago.
Your theory is wild, unsupported by the facts, and bordering on ludicrous. The CIA's theory isn't quite so absurd, but it's close.
That didn't mean rocks weren't falling or that people weren't getting hit with them.
BTW, the cat's out of the bag now ~ rocks fall from the sky!