That's really stupid, even just Biblically speaking. The bible always talks about sin entering mankind through the sin and Adam and Eve, not all creation.
Just as one example: Romans 5:12 says
"Therefore, just as sin entered the world through one man, and death through sin, and in this way death came to all people, because all sinned--"
"For if, by the trespass of the one man, death reigned through that one man, how much more will those who receive God's abundant provision of grace and of the gift of righteousness reign in life through the one man, Jesus Christ!"
I would expect that if God created life on other planets, and since he has no obligation to tell us about them, they would have their own interactions with him. If they needed a savior, they would have their own.