It has drastically overstated the likelihood of a globally catastrophic impact from space.

A devastating regional impact is estimated to occur once every 10,000 to 100,000 years. Note that’s regional not global.

There has only been one of any significance in all of recorded history that I’m aware of, which fortunately took place in an uninhabited region of Siberia.

Search for Torino Scale if you’re interested in learning more about how they estimate and categorize these threats.