What about the current Earth planet today and the new Earth mentioned in Rev 21:1?
Given that Noah's Earth "was destroyed" yet we are still on it today, I think the New Earth cannot still have the ashes of the wicked on it where the saints walk on the ashes of the wicked Malachi 4:1-5 - without this planet being the same one as the one in Rev 20.
Rev 11:
15 Then the seventh angel sounded; and there were loud voices in heaven, saying,
“The
kingdom of the world has become the kingdom of our Lord and of His Christ; and He will reign forever and ever.”
Dan 7: 26 But the court will convene
for judgment, and his dominion will be taken away, annihilated and destroyed forever. 27 Then the sovereignty, the dominion, and the greatness of
all the kingdoms under the whole heaven will be given to the people of the saints of the Highest One; His kingdom will be an everlasting kingdom, and all the empires will serve and obey Him.’
It is the Earth made new.
Rev 21:5 And He who sits on the throne said, “Behold,
I am making all things new.” And He *said, “Write, for these words are faithful and true.”
5 Then He who sat on the throne said, “
Behold, I make all things new.” And He said to me, “Write, for these words are true and faithful.”