Earlier quoted context omitted.
They might occupy some area, sure, but if they invade a EU or NATO country they'll get that full force on top of them. And they have a lot of aircraft to deploy too; tanks have zero chance against an airstrike.
NATO cannot stop Russia in Ukraine, even with help of 1 million Ukrainian army. NATO have no enough tanks, shells, soldiers to stop 2 million army in few first weeks, even if Russians will just march with their AK-s in hands. The only thing that will stop Russia for sure is a nuclear strike. Planes are good for strikes, but ground must be captured and hold by soldiers.
I actually do think that the US and Europe should be moving faster to increase their military manufacturing capacity, especially Europe given the situation they are now facing. But to say that NATO countries have been throwing everything they have to Ukraine is wildly off the mark.