Indeed they demonstrated that, but don't underestimate the effect an existential crisis like this has. We will almost certainly see heavy changes coming to the Russian military. It could be that in five to ten years their military is actually capable, after both structural and strategical upgrades.

And the lines we now draw between NATO, Russia and China could well be the lines of a WW3 within a decade. Hopefully not though.

They've claimed to be doing those heavy changes for the last ten years and this is what they have to show for it.

Being cut off from nearly all advanced technology and with a terrible economy doesn't sound like a recipe for improving much in that sense either.