This strategy might have only worked with the destruction of cities by nuclear weapons in Japan.

The resolve of the German population was not broken by the bombing of civilians. If they wouldn’t have hit the military production capabilities and invaded with ground forces the war would have dragged on much longer (and Germany lacked vital resources in their territory, unlike Russia).

So even if your suggestion to bomb the civilians wouldn’t be quite reprehensible by itself, it’s extremely unlikely that this would end the war on it’s own.

Just look at the numbers of soldiers Russia has lost, this didn’t seem to faze the support of the general population so far either (families and friends if those who died it who were severely injured).

While that article has some good, relatable points, Vance still managed to be elected, so there are a lot of people that won’t be swayed by this at all. Maybe some of the Democratic voters that didn’t vote last time will take this as an incentive to go vote.