It is not the line of questioning that is silly. It is the line of answering. Claiming that there was a global flood in 2450 BC during the late
Vth Egyptian dynasty after there had been a least 40 recorded kings of Egypt, and after the war between
Lakash and Umma in Mespotamia is what is totally silly.
Then why didn't any of the myriad people on earth who were alive in 2450 BC even notice it? They kept right on keeping on in the same places they have been living for thousands of years and weren't the least bit bothered by this supposed global flood.
No I understand from the documentary and archeological evidence of several whole nations as well as a huge mass of scienfic evidence, that as the OP states
"The Global Flood is a fantasy".
I am not sufficiently naive to believe that my interpretion of a collection of Bronze Age Hebrew origins stories trumps both history and science. That is your problem.