Great! The Russians are unwittingly helping us better prepare for war against them.
One of the reasons The US gives Israel weapons is to get them live-fire combat-tested. Saves us the trouble (and the cost in blood) of doing it ourselves.
And every time the Russians pull out their latest and greatest hi-tech kit to use against weapons the US has supplied to the Ukrainians in their little backyard squabble, we get the opportunity to learn how to defeat their countermeasures at a reduced cost to us.
Nothing new, this is the nature of war, both sides adapt as quickly as they can, until they can’t.