I've no idea whether plate tectonics is a very accurate theory or not. Perhaps in 20 years someone will come along with a radically different theory that fits the data a lot better.
On the face of it, though, it seems enormously more reasonable than the TOE. This is because plate tectonics describes a mindless physical process producing unremarkable rock formations which are devoid of specified complexity / apparent design. However, if someone were to take me to Mount Rushmore, point to the faces and argue with a straight face that these formations were produced by mindless physical processes such as plate tectonics + erosion then I'd be justified in concluding that this person was pretty irrational.
It's worth noting that I couldn't really prove him wrong. Even if I showed him historical data about the creation of the faces he could always argue that it's a hoax; a myth.
Also, it is not
impossible that plate tectonics plus erosion could (given enough time

) 'create' an accurate copy of Mount Rushmore somewhere else in the world. But to believe in that tiny possibility over the possibility of intelligent design, in my opinion, is by far the less rational choice to take.
People here are believing that the many-orders-of-magnitude-more-complex than Mount Rushmore life forms on Earth were first brought into existence and then enormously but blindly developed by mindless physical forces.
Sorry, but it's crazy.
Here's a quote from Malcolm Muggeridge which pretty much sums up my view on the matter:
""I myself am convinced that the theory of evolution, especially to the extent that it's been applied, will be one of the greatest jokes in the history books of the future. Posterity will marvel that so flimsy and dubious a hypothesis could be accepted with the incredible credulity that it has."