Reading comments like yours makes me wonder what kind of mental model of the world some people are working with. Russia does not need HN comments to tell them where train stations are.

It’s highly likely that Russia already has detailed models of every stations in Ukraine. If they didn’t before the war, they do now. Mapping public infrastructure doesn’t require a lot of spying.

But you have to understand that information control during war requires a shift of mindset. It’s better to start controlling everything which could be used by the enemy even if they probably already have it than try to establish complex rules. It gives good habits to people.

Most, if not all, of the stations were build during Soviet times. Russia have the original maps of most of them.

Of course they know where the stations are. But they don’t necessarily know the precise local of all the underground tunnels, exits, mechanical rooms, equipment, etc. The underground network is far more complex than what the consumer map hanging on the wall in the station shows.