Zeihan's analysis was that they aren't really going to arm those 300K troops. They're just going to be able to rotate out the 150K they have in theater at the moment and continue rotating them out to keep them fresh.What are they going to arm those 300k troops with?
But your point is well taken. The Russians haven't really said "Go into battle with a sharp stick and then pick up a Mosin from the first of your comrades you see fall" since, what?, Stalingrad?