“Able to hit” is the key = The bridges in North Vietnam were aimed at thousands of times by very large but unaimed, unguided bombs. Terminal guidance was crude and very dangerous through the TV-screens and radios of the day.
An impact with light weight weapon will actually be effective. Sometimes. Sometimes it helps to pound hell out of the ground with crude weapons, since your target (areas of troop tents for example) costs less than the bomb and UAV you’re flying against it, and covers a wide and random area.
I’m all for “force multipliers”, but I’m glad we still have B-52’s strikes that can basically take out a square mile at a time. “Dumb” bombs can be targeted fairly accurately these days. Once air cover and anti-aircraft missiles are neutralized, troops might as well put up an umbrella against something flying at 30,000 feet. Not every enemy is “first-line”.