I think that makes a lot of sense though. I think if he only discussed the nuance and complexity that people would assume these differences would be huge, and suddenly their coffee would start emitting rays of holy light or something.

It's very complex, and it does make a difference, but in the end it is what is considered fine tuning by a lot of people. And once you understand that, then you can let your mind zoom into those details and it will no longer be fine tuning.