No... discernment and, IMO, common sense is brought to the story by the reader.There is nothing in scripture that would lead a Christian to interpret the story as allegorical.
I believe that the tale of the Garden of Eden is effectively a "just-so story" to explain how a supposedly perfect God could create a world that is obviously imperfect, as can be seen by anyone who cares to look.
Not all opinions are created equal, and some border on irresponsible. The appeal to allegory is cheap, convenient, and evinces a self-serving ignorance of the pervasiveness of superstition in the ancient world. It also exhibits a remarkably arrogant thoughtlessness as it casually dismisses such writings as the Talmud.
Something being allegory doesn't dismiss anything. Allegory can be a useful and powerful teaching tool. Why would we assume that ancient people did not use allegory when it would have been a good method to get their point across?