Hoffman is a joke and is not respected by anyone in the coffee industry, he's a pretentious twat and exactly the opposite of what coffee needs. Most content you see online is pay-to-play so if you spend more money you get more content.
Scientists have a hypothesis and then test that hypothesis, this isn't what he does. You want a scientific approach try these guys https://socraticcoffee.com/ they do a reasonably good job.