Quadcopters enabled the Ukraine war to descend 'into a withering slog'. Had it not been for some initial miscalculations on the part of the Russians and those drones, Ukraine might have been, and still might be, overrun. As it is, the drones have changed the shape of warfare.
Short of nukes, bombing has yet to win a war by itself. The attitude of the Air Force toward infantry (who needs viable close air support, too), is stuck on Bomber Harris.
Granted, bombing can cripple an enemy's ability to continue to provide logistical support, and that makes the job easier overall for the ground pounders, but until the enemy runs out of ammo and vehicles and, even, men, that does not get the job done. Boots on the ground do, and drone support has proven invaluable in the Ukraine, and will, I expect prove invaluable in future conflicts, both in the tactical action on the ground, and in the air as well.
How many quadcopters can you deploy for the cost of a single aircraft?