Russian forces are using the railways however the supply dumps and the coordinated long range precision Ukrainian attacks that are targeting them have done phenomenal amounts of damage. You got to be careful when you're in war that you do not give away the locations of these vital supply dumps however it seems like Russian forces are totally willing to share this information freely with the Ukrainian military forces in the area.
Yeah that super duper Ukretards intelligence that claimed the Russians were out of missiles and that they'll do a general mobilization in January.