This isn't as smart as it sounds tho. The key language in his statement comes from "I believed that everything that happened in the bible was real and not a metaphor or parable"
I dont think it debunks christianity, because most christians already know the bible to be both real and metaphorical. Even within the first book its like God created the heavens and earth or universe is 6 days and rested on day 7.
That alone should be dummy proof to question, what is a day? Is god's day 24 hrs like ours is? Could a day be dozens of thousands of years?
How do you translate ideas we cant even perceive into written language.