I suppose when one can't discern between when it's being used as a metaphor and when it's being used literally that would make sense.
And in Luke 8:6 is scripture talking about actual seed falling upon an actual stony surface? Or it is a metaphor for the Word of God not being sustained in those who do not persevere till then end?
Hint: "Rock" is used as a metaphor in Is. 51, Matt. 16, Luke 8:6, and 1 Cor. 10. Can you not discern that?
You VIPERs!
Can't you tell the bread from FLESH or not?