I was waiting for you to say something like that.
The problem, of course, is you have no explanation for the appearance of Kangaroos at all!
Only the Evolutionary model explains the Kanga!
After the animals are released from the ark, presumably hundreds of different kinds of marsupials race to Australia before the massive island continent starts to move offshore hundreds of miles. They arrive there before any of the placental mammals can. And as Australia sets sail for the middle of the ocean, all the marsupials wave good by to the stunned placental mammals. Ha!
That is the only way to explain why we don’t find placental mammals mixed in with the marsupials there.
Whereas, the evolutionary scenario requiring continental movements over millions of years fits the data perfectly.