Since the first statement of your post is incorrect, the rest of your post is based on a false premise. To declare that one knows the effects of a unique, one-time event on earth's geology is mere hubris, IMO. It has been amply demonstrated that archeological dating is more and more unreliable, the further back in history one tries to date objects. In view of such uncertainty, Scholars also must be extremely wary of attaching undue authority to archeologists estimates of dates and interpretation of data. That the fixing of dates and the conclusions drawn from archeological findings often depend on subjective factors is amply demonstrated by the wide divergences between competent authorities on these matters.Archaeology and the Old Testament, 1964, p. 164. The claim that genetics disproves the Flood occurred is simply speculation. Impugning the intelligence of those who hold views different from yours does you no credit, but perhaps ridicule is an effective propaganda tool.