People having misgivings about the records of the earliest events that shaped human civilisation does not mean the events didn’t happen. Looking just at archeology of it and extant texts from before and after the time (texts written after but indicating earlier documents existed of which they were copies) you see Utnapishtim (Noah) surviving a catastrophic flood ingrained into folklore and historic narratives. You see him living in a city Sharappak and possibly resetting there again long afterwards and the city being rebuilt preserving a flood layer dating it all to the third millennium BC. Something happened and the people involved are perpetuated in history.
