And not just fruit - getting ability to metabolize alcohol, ie. to efficiently consume those ripe fruits lying around under the tree seems to be that jump start in the brain development, walking up-right, etc. And the alcohol produces that artificial feeling of empowerment and freedom (which are basically top temptations by the devil). Btw, in Russia alcohol has evil image of the "green serpent" (after the biblical Serpent, and the Soviet propaganda used all that religious imagery - a 1962 cartoon where moonshine distillator is ran by a Witch and a Daemon and it morphs into the Serpent, and there is also a Faust's Mefistofele signing the famous solo of the opera

https://youtu.be/xa7VHwpCgDk?t=352 and https://youtu.be/xa7VHwpCgDk?t=482 )