Knowsnothing:
The flood? That falls at the 'plausability' stage I would say, without going into all the evidence which is out there. Less than 6,000 years ago the world population was reduced to 8 people in the Middle East?
As in the OP, those making the claim that gods exist are required to prove it (at least to those of us that require proof). Those who wish to believe will continue to do so regardless of what evidence is or is not available. Indeed, to some believers the more irrational their beliefs the greater their 'faith' and thus the 'stronger' they are.
Some, many, most, rational people would conclude that the 'creation' myth has been effectively disproved, that the 'creation' debate is over. But when we discuss religion 'rationality' is not frequently a recognised factor.