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.
OK. The point is they believe these to be old ancient whales. While the dataing is a guess there is a huge difference between ancient and recent fossils. Anyone trying to link this to “the flood” is just pushing their young earth agenda.