I prefer to think of it as a necessary evil rather than a good thing, but I understand what you mean. Another outcome was that it allowed the Soviets to focus on resisting and weakening Japanese Imperialism, which I almost never see anticommunists mention (let alone discuss).

An anticommunist would probably reply to you saying that the Soviets went in deporting and exterminating millions of peaceful civilians who were simply minding their own business or, at worst, politely expressing their disagreements with Joseph Stalin’s government.