We see that $1000 drones with explosives can be incredibly effective at both surveillance and taking out squads. The fact that these $1000 drones are doing the work often reserved for missiles or artillery with a much higher price tag says just how efficient they are.
Its like the kamakazi pilots, except there's a human driving it, without a human inside.
Ukraine has shown what the future of warfare is. Now everyone is trying to be more efficient at it.