While the bombing in WW2 did at times deliberately target civilians, also they were incredibly bad at dropping the bombs in the right place.

They regularly conducted bombing raids at night in almost complete darkness, with a guy looking out the top of the plane with a sextant measuring the location of stars to decide when to drop the bombs. So anything within, say, 3 miles of a tank factory was at risk of being bombed.

Improved technology had a great impact in this area, because if 90% of your bombs are missing the target, a perfect targeting system is like having 10x as many planes.

Yet, with modern technology russians are bombing apartment blocks, theaters, hospitals. That is the famous Russian culture: war crimes at a large scale.