Everyone should "question", but the way to both ask and answer those questions is the scientific method, along with peer-reviewed sharing of published results. The foundations of modern science are 100+ years of publication and evidence, built progressively over the decades by workers across the world who have no common financial incentives. If your "questioning" leads to the conclusion "it's all wrong and this podcast guy is right," I would "question" whether you're being sold a bag of goods.