Most people ain't steered by first-principles thinking, though, and that's the problem. To most people, first-principles-driven thinking lacks sufficient actionability; they just want definite answers, and first-principles-driven thinking tends to produce answers that are anything but definite.
First principles are great in principle, but what really makes for greater thinking is focusing on the reality and details of a problem, then picking applicable first principles. Often when I hear principled stances they’re entirely devoid of links between the real world and the utopia in the person’s head.