In conclusion, then, both a textual element (genealogies) and a theological element (sin and redemption) argue strongly for a historical Adam and Eve. At the same time, it must be observed that for them to play these historical roles does not necessarily require them to be the first human beings (biologically/genetically). In other words, the question of the historical Adam has more to do with sin’s origins than with material human origins. (John Walton, The Lost World of Adam and Eve, 103)
The amount of exegetical gymnastics required to create a historical person that function as the archetype Adam that is however NOT the historical Adam of Genesis 2-3 is astonishing! I guess asking people whether they believe in a historical Adam is nowadays insufficient for establishing orthodoxy, in this light.