Certainly true. I found the context with the Toys R'Us car quite funny, that's why I shared.
On mortars, I found this: https://www.timesofisrael.com/after-failures-in-2014-war-iro...
In order to catch mortars (very high angle of fire with very short range) you need be very close "to the enemy" when you are that close its much harder to detect rockets since they quickly pass by the radar in that range