XIETIAN
So not only did Sirius hide the earth by "destroying" it, he also worked hand in hand with the mysterious being behind the Soul Record to somehow regress the planet to its unevolved state? Maybe the evolving of the earth is happening when BZ is in certain places by design, since it technically doesn't need the time to adapt. It's only returning to a form it previously obtained, after all.
My initial thoughts are that after Lucifer and god left, sirus separated earth from the soul record in which the previous weaker evolved creatures could only die out and leave clues in ancient structures as history couldn’ be completely confirmed. So now that earth was reintroduced to the soul record it’s catching up to where it used to be way in the past which is why it’s evolving so fast. Thanks for the awesome chap!