As a general rule of thumb:
truth = claim.replace(/I'm not (.*?), but (.*)/, "I'm $1.");
Then again this is a discussion about "Experts explore new mushroom which causes fairytale-like hallucinations" so maybe woo is appropriate, and you should embrace it.
I have little patience for intelligent-design and the likes, if that's what you are getting at.
All I'm saying is that blind enumeration of mutations seems combinatorially infeasible due to the vastness of the search space. It is already known that mutation bias exists, so what I'm saying shouldn't be that controversial.
Is there a way their question could have been phrased that would have not drawn you to make that assumption, which seems to be an ethos attack, or are you predisposed to reply in such a way about any philosophical evolution question?