The article says ancient whales and it happened between 2 and 7 million yrs ago. You mention “the flood” which implies noah’s flood. Noah wasn’t around 2 million years ago.
There is no objective evidence that the Earth is more than 6015 years old.
The millions and billions stuff is pure fantasy.
The dating of "between 2 and 7 million yrs ago" is just conjecture, based on some shaky presuppositions. The truth is, no one knows, or can know, with any degree of certainty how old these things are. All one can do is make hypotheses, on the assumption that dating methods that may be correct up until a certain point back would hold true beyond that, and that nothing could have intervened to skew the data.