I don't think anyone fails to understand this. The points being made are that 1) Russia is also using old stock so assessing Russian capabilities based on what they are fielding is copium; 2) the US literally doesn't have the physical manufacturing assets required to increase production to anything resembling reasonable; 3) while the US is ramping up production, Russia and China are already significantly further ahead in manufacturing and also are ramping up production meaning the US is racing to see who can produce more while starting from way behind and not having anywhere near the infrastructure necessary to ramp faster than either Russia or China.