The indiscriminate targeting of civilians in GER / JAP was a phase when neither of the aggressors could have changed the outcome, a large-scale invasion would have a severely worse effect on the citizens and higher death cost on the US/allied side as well.
That does not compare here, for what they are actually worth Russia as a nation has not started fighting yet nor an invasion into their lands is the sole means / required to make them stop.
Having said that, they seemed to have crossed the line when anyone reasonably stopped fearing their nuclear arsenal. With crimes like the above, what worse could happen? They command a launch of 10 warheads, 5 actually leave the silos. One crashes on RF territory, two get intercepted, and the last pair does not detonate or miss the target. Worst case 2 work as the devil intended, death toll close 100k and within 10 days the whole of armed russian forces, globally is evaporated - with conventional armaments.