That second point is actually even worse than it sounds, because now Russia is draining the war materials of other adversaries to US geopolitical goals because of how unsustainable continuing to use their own stuff is.

This isn't just a war of attrition against Russia, it's now also against Iran and North Korea too, and Ukraine is STILL eating it all up like their front line forces are all just kirbies in Ukrainian army helmets.

The US not only has incentive to support Ukraine, it has incentive to do so vigorously enough to keep morale in Ukraine high enough to keep the war going even if it begins to drag into the years to come, almost especially if it starts dragging that long, every extra day Ukraine fights is more material Russia or China or North Korea or Iran wouldn't be able to call upon threatening American allies or America itself.