Russia is trying to kill civilians en masse by attacking a single residential building with a much too small rocket?
Discussion
You obviously didn't read what I quoted. In that one attack, on one city, 18 different apartment buildings were damaged.
I personally know someone whose apartment windows in Kyiv were blown out in a shahed drone attack the other day. One of their neighbors wasn't so lucky.
Russia is launching huge numbers of shahed drones at apartment buildings. They're trying to murder enough Ukrainians that the economy collapses and they're forced to surrender.

Are you dumb or what?
Shahed drones can't take buildings down very easily; shahed drones are almost the only weapon Russia has that they can use again most Ukrainian cities with civilians living there.
Hence why they use them for terror: sending them into individual apartments, one at a time, to try to kill anyone inside.