Teach the controversy? I think that Genisis is allegorical because there is no factual basis to it. There is a great deal of factual evidence to the theory of evolution. There is indisputable evidence for the geological theories of gradualism, deep time and plate tectonics.
Re: indisputable evidence for the geological theories of gradualism, deep time and plate tectonics. <== so which is it indisputable or theory? The law of biogenesis is almost indisputable as are the thermodynamic laws - almost or as close as it gets which is why we call them laws and not theories.
When science becomes theories, assumptions and conjecture is when it attempts to explain history and define it’s duration. Go back to the fundamentals of the scientific method and see if you can determine exactly why science can’t accurately define any aspect of unobserved history.