You do know that the annual U.S. defense budget alone is over twice the Russian budget for its entire government, and half of the entire Russian GDP, right?
It is absurd to think that the U.S. is meaningfully weakening itself by the extremely modest (by the scale of the U.S. military) delivery of arms to Ukraine. Indeed, this probably just makes its procurement supply chains stronger.
The rest of it's all wrong too, but man, this is just silly.