The article, though, doesn't mention that the arc trajectory of ballistic missiles means they are spotted faster. But such missiles are nowadays - as far as I

The article, though, doesn't mention that the arc trajectory of ballistic missiles means they are spotted faster. But such missiles are nowadays - as far as I know - primarily detected via infrared from space and not radar stations near the target which turns the atmospheric trajectory into a disadvantage due to heating of the vehicle which is also mentioned in this article.