But it remains true that "Holy Mother Church holds and teaches that God, the source and end of all things, can be known with certainty from the consideration of created things, by the natural power of human reason; ever since the creation of the world, his invisible nature has been clearly perceived in the things that have been made."
I suppose you could argue that the consideration of created things can lead to certain knowledge of God as source and end of all things without discerning any design in creation. I don't think I'd want to have to argue that, but it beats arguing that Holy Mother Church is wrong.