First off, the scientific method only finds things that are less wrong, there's never anything even close to certainty and finality. Your entire life's work could be entirely replaced by an Einstein.
Secondly, there's an enormous volume of trade, industry and commercial knowledge that has exactly zero published studies but sufficient less-wrong "scientific" testing to be knowledge.
And yet that's how things should be done, based on decades and centuries of craftsmanship, apprenticeships, and corporate knowledge.
Your opinion is exactly why I posted what I posted. The scientific method is powerful, but it's extremely slow to propagate.