Kipchoge as the GOAT is Nike manufactured PR, he is nowhere near Bekele or even Geb for that matter. He was lucky his marathon career coincided with the invention of the supershoe, because all those former 2:03 guys from the pre-supershoe days (Makau, Kimetto, Kipsang, Mutai, Biwott) would have run 2:01 if they got vaporflys.
Also nobody races each other in the Marathon, so to claim GOAT status for winning down a bunch of watered down Berlins is ridiculous. Get on a start line with Kelvin Kiptum before you retire