It's a reasonable hypothesis.
BTW, the finches are now pretty obviously not evidence for any kind of macro-evolution since many of the "different" species have been observed breeding with each other. The beak sizes are just adaptation, which is what all observed "evolution" is. They have been seen to both grow and shrink at various times.
It surely is as a reasonable hypothesis as Reverend Wright's assertion that the government created AIDS to destroy the blacks in America.