Theoretically...
It does make sense. A fraction of 1% change in speed/direction a few million km out can have a big effect by the time Earth orbit is reached - the difference between taking out the ISS and taking out New York.
But it will need preparation.
Presumably if DART proves the principle, it will be wise to shift some large masses into orbit on stand-by to be shoved in the right direction when needed?
Biting the hand that feeds IT
