Russia bombards all the civilian infra immediately anyways, because it creates a crisis that the defenders have to manage. It’s better to have a your defensive forces close to your civilian populace, than having to fly over to them once the attack has already started.
Remember, day 1 of the current Russian invasion, they tried to seize Kyiv airport, to bring in transport planes. The civilian airports are strategic targets even without any military presence.
Russia bombards all the civilian infra immediately anyways, because it creates a crisis that the defenders have to manage. It’s better to have a your defensive forces close to your civilian populace, than having to fly over to them once the attack has already started.
Remember, day 1 of the current Russian invasion, they tried to seize Kyiv airport, to bring in transport planes. The civilian airports are strategic targets even without any military presence.