KalebOutWest It’s possible that Genesis and Gilgamesh are both based on the same events. Just because they have features in common doesn’t mean they are not independent accounts. Plus an older account is not necessarily a better account. If we want to know what happened in World War One the latest academic monographs on the subject would be a reasonable and arguably preferable place to look, even though many older accounts are available.
Plus even if the author of Genesis was aware of an older Gilgamesh account of events his narrative can be read as a reaction against that tradition and an attempt to correct some errors that it spread. When people act as if dependence on Gilgamesh somehow settles the issue it seems to me they have not thought about the possibilities deeply enough. If you’re inclined to discount the Bible then I suppose the mere existence of Gilgamesh is enough to hastily conclude: derivative therefore nonsense. It’s a bit lazy and too convenient.