How does bombing Kyiv effect the front line hundreds of miles to the south and east?
Water purity becomes a problem. Food storage becomes a problem. Airbases (if they have any left), radars, etc are all degraded because not they have to run on generator power. Generators need fuel, maintenance, etc. Then last, by degrading morale, people may begin to get annoyed with Zelinsky. Uke propaganda is much harder to distribute if people cannot turn on the TV...
You are confusing terror bombings an their goals with legitimate warfare. Aside from what you said regarding transportation, everything else here is purely to terrorize and harm the civilian population "to get [them] annoyed [at the government.]" These things are not the same.
So in your simple mind, one may only bomb military forces you directly face across from, but not the capitol, not transportation hubs, not things that tax the ability of the government to function.
It may be that way there in Mexico where you are, but it hasn’t been that way for a long time.
Also, the nazi artillery pounded the Donbass population centers for 8 years for the crime of opting out of the coup. It’s effective and legitimate. Hell, we even do it when we attack a country.
Boom boom, out go the lights.