The genetic variation in any species is confined to a limited set of variables such as a finch beak’s thickness.
Taking the facts and arguments presented together, it appears to be clear that no macroevolution is happening in “Darwin’s finches.”
They are not, per the National Academy of Sciences, a “particularly convincing example for speciation.”
As technology mimics nature, at what point might future investigators be unsure about natural versus intelligent causes?
We still are not close to designing any self-replicating machine. That is still pure science fiction.