I think there are much bigger strategies at play here.
The US has realised it can badly weaken the Russian conventional military, possibly for decades, perhaps even permanently.
So it's fighting a proxy war.
NATO is quite happy to join in with the same goal.
Lloyd Austin has said as much.
It's a proxy war I agree with entirely by the way... all power to our Ukrainian friends.
We supply the weapons - they fight like demons - and Russia's conventional armed forces exhaust their ammunition, are turned into scrap metal and can only wave the big nuclear stick in future.