Where are you reading that? Nobody here is making that claim.
Russia is fighting WWII in the era of satellites, drones and the ability to source communications. If you don’t roll over your enemy quickly and you don’t have communication security you are screwed. A Russian tank costs between $1/2 million to 4 million. Tank busting drones and missiles cost $100k to 200K. Bad cost ratio when the west fronts the cost of the tank busters. Russia isn’t using any combined arms tactics in an effective fashion. I have never heard Russia would collapse on Free Republic.