The problem is the tests are useless. They make lazy assumptions, there's no justifications or reasoning for any of their experimental designs, they have multiple variables they don't control for and there's no actual data collected. They hide behind the taste testing because it allows them to provide "scientific" results without any actual results.
They're the kardashians of science, all show and no substance. A picture of a thermometer and scientific jargon they don't understand themselves doesn't validate the results. Maybe some people see that and think "wow they went through a lot and everything is measured so carefully" but there's really no scientific thought process in any of it, and it's presented with a certain air of snake oil salesmanship. Just read his response below, someone questions ester production his answer is "I've been drinking lager for 10 years and I cant taster esters" That's a salesman answer, not a scientific answer.