The benefits are about demonstrating western weapons and tactics to be paper tigers, showing how shallow western weapons supplies are and how slow and unproductive western military industrial complexes are

Sure, their tactical usefulness in a defensive conflict has been disproven, but NATO has already proved how effectively it can destabilize and terrorize countries in an offensive situation. Even if it doesn't gain any land, like in all US wars after WWII, it still causes immense destruction and suffering for the people involved. The West has proven itself a poor ally, but not a poor enemy. I fear that even a multipolar world, capitalist powers will be willing to unite against leftist uprisings and be capable of thoroughly damaging them; as Russia is still able to gain by crushing left wing dissent.