That's a valid concern, but I don't think so. Some things to consider:
Additional viewpoint that might be relevant: if you believe the duration of the war to be mainly time-dependent (e.g. "everything will end the day Putin dies or the day Ukraine gets a shipment of modern weapons") instead of resource-dependent (e.g. "everything will end the day there are no Russian volunteer soldiers anymore") then each railway delay means some amount of civilian lives saved.